Commit d65b4e98d7ea3038b767b70fe8be959b2913f16d

Authored by Linus Torvalds
1 parent 6308240296

Linux 3.3-rc3

Showing 1 changed file with 1 additions and 1 deletions Inline Diff

1 VERSION = 3 1 VERSION = 3
2 PATCHLEVEL = 3 2 PATCHLEVEL = 3
3 SUBLEVEL = 0 3 SUBLEVEL = 0
4 EXTRAVERSION = -rc2 4 EXTRAVERSION = -rc3
5 NAME = Saber-toothed Squirrel 5 NAME = Saber-toothed Squirrel
6 6
7 # *DOCUMENTATION* 7 # *DOCUMENTATION*
8 # To see a list of typical targets execute "make help" 8 # To see a list of typical targets execute "make help"
9 # More info can be located in ./README 9 # More info can be located in ./README
10 # Comments in this file are targeted only to the developer, do not 10 # Comments in this file are targeted only to the developer, do not
11 # expect to learn how to build the kernel reading this file. 11 # expect to learn how to build the kernel reading this file.
12 12
13 # Do not: 13 # Do not:
14 # o use make's built-in rules and variables 14 # o use make's built-in rules and variables
15 # (this increases performance and avoids hard-to-debug behaviour); 15 # (this increases performance and avoids hard-to-debug behaviour);
16 # o print "Entering directory ..."; 16 # o print "Entering directory ...";
17 MAKEFLAGS += -rR --no-print-directory 17 MAKEFLAGS += -rR --no-print-directory
18 18
19 # Avoid funny character set dependencies 19 # Avoid funny character set dependencies
20 unexport LC_ALL 20 unexport LC_ALL
21 LC_COLLATE=C 21 LC_COLLATE=C
22 LC_NUMERIC=C 22 LC_NUMERIC=C
23 export LC_COLLATE LC_NUMERIC 23 export LC_COLLATE LC_NUMERIC
24 24
25 # We are using a recursive build, so we need to do a little thinking 25 # We are using a recursive build, so we need to do a little thinking
26 # to get the ordering right. 26 # to get the ordering right.
27 # 27 #
28 # Most importantly: sub-Makefiles should only ever modify files in 28 # Most importantly: sub-Makefiles should only ever modify files in
29 # their own directory. If in some directory we have a dependency on 29 # their own directory. If in some directory we have a dependency on
30 # a file in another dir (which doesn't happen often, but it's often 30 # a file in another dir (which doesn't happen often, but it's often
31 # unavoidable when linking the built-in.o targets which finally 31 # unavoidable when linking the built-in.o targets which finally
32 # turn into vmlinux), we will call a sub make in that other dir, and 32 # turn into vmlinux), we will call a sub make in that other dir, and
33 # after that we are sure that everything which is in that other dir 33 # after that we are sure that everything which is in that other dir
34 # is now up to date. 34 # is now up to date.
35 # 35 #
36 # The only cases where we need to modify files which have global 36 # The only cases where we need to modify files which have global
37 # effects are thus separated out and done before the recursive 37 # effects are thus separated out and done before the recursive
38 # descending is started. They are now explicitly listed as the 38 # descending is started. They are now explicitly listed as the
39 # prepare rule. 39 # prepare rule.
40 40
41 # To put more focus on warnings, be less verbose as default 41 # To put more focus on warnings, be less verbose as default
42 # Use 'make V=1' to see the full commands 42 # Use 'make V=1' to see the full commands
43 43
44 ifeq ("$(origin V)", "command line") 44 ifeq ("$(origin V)", "command line")
45 KBUILD_VERBOSE = $(V) 45 KBUILD_VERBOSE = $(V)
46 endif 46 endif
47 ifndef KBUILD_VERBOSE 47 ifndef KBUILD_VERBOSE
48 KBUILD_VERBOSE = 0 48 KBUILD_VERBOSE = 0
49 endif 49 endif
50 50
51 # Call a source code checker (by default, "sparse") as part of the 51 # Call a source code checker (by default, "sparse") as part of the
52 # C compilation. 52 # C compilation.
53 # 53 #
54 # Use 'make C=1' to enable checking of only re-compiled files. 54 # Use 'make C=1' to enable checking of only re-compiled files.
55 # Use 'make C=2' to enable checking of *all* source files, regardless 55 # Use 'make C=2' to enable checking of *all* source files, regardless
56 # of whether they are re-compiled or not. 56 # of whether they are re-compiled or not.
57 # 57 #
58 # See the file "Documentation/sparse.txt" for more details, including 58 # See the file "Documentation/sparse.txt" for more details, including
59 # where to get the "sparse" utility. 59 # where to get the "sparse" utility.
60 60
61 ifeq ("$(origin C)", "command line") 61 ifeq ("$(origin C)", "command line")
62 KBUILD_CHECKSRC = $(C) 62 KBUILD_CHECKSRC = $(C)
63 endif 63 endif
64 ifndef KBUILD_CHECKSRC 64 ifndef KBUILD_CHECKSRC
65 KBUILD_CHECKSRC = 0 65 KBUILD_CHECKSRC = 0
66 endif 66 endif
67 67
68 # Use make M=dir to specify directory of external module to build 68 # Use make M=dir to specify directory of external module to build
69 # Old syntax make ... SUBDIRS=$PWD is still supported 69 # Old syntax make ... SUBDIRS=$PWD is still supported
70 # Setting the environment variable KBUILD_EXTMOD take precedence 70 # Setting the environment variable KBUILD_EXTMOD take precedence
71 ifdef SUBDIRS 71 ifdef SUBDIRS
72 KBUILD_EXTMOD ?= $(SUBDIRS) 72 KBUILD_EXTMOD ?= $(SUBDIRS)
73 endif 73 endif
74 74
75 ifeq ("$(origin M)", "command line") 75 ifeq ("$(origin M)", "command line")
76 KBUILD_EXTMOD := $(M) 76 KBUILD_EXTMOD := $(M)
77 endif 77 endif
78 78
79 # kbuild supports saving output files in a separate directory. 79 # kbuild supports saving output files in a separate directory.
80 # To locate output files in a separate directory two syntaxes are supported. 80 # To locate output files in a separate directory two syntaxes are supported.
81 # In both cases the working directory must be the root of the kernel src. 81 # In both cases the working directory must be the root of the kernel src.
82 # 1) O= 82 # 1) O=
83 # Use "make O=dir/to/store/output/files/" 83 # Use "make O=dir/to/store/output/files/"
84 # 84 #
85 # 2) Set KBUILD_OUTPUT 85 # 2) Set KBUILD_OUTPUT
86 # Set the environment variable KBUILD_OUTPUT to point to the directory 86 # Set the environment variable KBUILD_OUTPUT to point to the directory
87 # where the output files shall be placed. 87 # where the output files shall be placed.
88 # export KBUILD_OUTPUT=dir/to/store/output/files/ 88 # export KBUILD_OUTPUT=dir/to/store/output/files/
89 # make 89 # make
90 # 90 #
91 # The O= assignment takes precedence over the KBUILD_OUTPUT environment 91 # The O= assignment takes precedence over the KBUILD_OUTPUT environment
92 # variable. 92 # variable.
93 93
94 94
95 # KBUILD_SRC is set on invocation of make in OBJ directory 95 # KBUILD_SRC is set on invocation of make in OBJ directory
96 # KBUILD_SRC is not intended to be used by the regular user (for now) 96 # KBUILD_SRC is not intended to be used by the regular user (for now)
97 ifeq ($(KBUILD_SRC),) 97 ifeq ($(KBUILD_SRC),)
98 98
99 # OK, Make called in directory where kernel src resides 99 # OK, Make called in directory where kernel src resides
100 # Do we want to locate output files in a separate directory? 100 # Do we want to locate output files in a separate directory?
101 ifeq ("$(origin O)", "command line") 101 ifeq ("$(origin O)", "command line")
102 KBUILD_OUTPUT := $(O) 102 KBUILD_OUTPUT := $(O)
103 endif 103 endif
104 104
105 ifeq ("$(origin W)", "command line") 105 ifeq ("$(origin W)", "command line")
106 export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) 106 export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W)
107 endif 107 endif
108 108
109 # That's our default target when none is given on the command line 109 # That's our default target when none is given on the command line
110 PHONY := _all 110 PHONY := _all
111 _all: 111 _all:
112 112
113 # Cancel implicit rules on top Makefile 113 # Cancel implicit rules on top Makefile
114 $(CURDIR)/Makefile Makefile: ; 114 $(CURDIR)/Makefile Makefile: ;
115 115
116 ifneq ($(KBUILD_OUTPUT),) 116 ifneq ($(KBUILD_OUTPUT),)
117 # Invoke a second make in the output directory, passing relevant variables 117 # Invoke a second make in the output directory, passing relevant variables
118 # check that the output directory actually exists 118 # check that the output directory actually exists
119 saved-output := $(KBUILD_OUTPUT) 119 saved-output := $(KBUILD_OUTPUT)
120 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) 120 KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd)
121 $(if $(KBUILD_OUTPUT),, \ 121 $(if $(KBUILD_OUTPUT),, \
122 $(error output directory "$(saved-output)" does not exist)) 122 $(error output directory "$(saved-output)" does not exist))
123 123
124 PHONY += $(MAKECMDGOALS) sub-make 124 PHONY += $(MAKECMDGOALS) sub-make
125 125
126 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make 126 $(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make
127 $(Q)@: 127 $(Q)@:
128 128
129 sub-make: FORCE 129 sub-make: FORCE
130 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ 130 $(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \
131 KBUILD_SRC=$(CURDIR) \ 131 KBUILD_SRC=$(CURDIR) \
132 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ 132 KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \
133 $(filter-out _all sub-make,$(MAKECMDGOALS)) 133 $(filter-out _all sub-make,$(MAKECMDGOALS))
134 134
135 # Leave processing to above invocation of make 135 # Leave processing to above invocation of make
136 skip-makefile := 1 136 skip-makefile := 1
137 endif # ifneq ($(KBUILD_OUTPUT),) 137 endif # ifneq ($(KBUILD_OUTPUT),)
138 endif # ifeq ($(KBUILD_SRC),) 138 endif # ifeq ($(KBUILD_SRC),)
139 139
140 # We process the rest of the Makefile if this is the final invocation of make 140 # We process the rest of the Makefile if this is the final invocation of make
141 ifeq ($(skip-makefile),) 141 ifeq ($(skip-makefile),)
142 142
143 # If building an external module we do not care about the all: rule 143 # If building an external module we do not care about the all: rule
144 # but instead _all depend on modules 144 # but instead _all depend on modules
145 PHONY += all 145 PHONY += all
146 ifeq ($(KBUILD_EXTMOD),) 146 ifeq ($(KBUILD_EXTMOD),)
147 _all: all 147 _all: all
148 else 148 else
149 _all: modules 149 _all: modules
150 endif 150 endif
151 151
152 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) 152 srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR))
153 objtree := $(CURDIR) 153 objtree := $(CURDIR)
154 src := $(srctree) 154 src := $(srctree)
155 obj := $(objtree) 155 obj := $(objtree)
156 156
157 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) 157 VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD))
158 158
159 export srctree objtree VPATH 159 export srctree objtree VPATH
160 160
161 161
162 # SUBARCH tells the usermode build what the underlying arch is. That is set 162 # SUBARCH tells the usermode build what the underlying arch is. That is set
163 # first, and if a usermode build is happening, the "ARCH=um" on the command 163 # first, and if a usermode build is happening, the "ARCH=um" on the command
164 # line overrides the setting of ARCH below. If a native build is happening, 164 # line overrides the setting of ARCH below. If a native build is happening,
165 # then ARCH is assigned, getting whatever value it gets normally, and 165 # then ARCH is assigned, getting whatever value it gets normally, and
166 # SUBARCH is subsequently ignored. 166 # SUBARCH is subsequently ignored.
167 167
168 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ 168 SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \
169 -e s/arm.*/arm/ -e s/sa110/arm/ \ 169 -e s/arm.*/arm/ -e s/sa110/arm/ \
170 -e s/s390x/s390/ -e s/parisc64/parisc/ \ 170 -e s/s390x/s390/ -e s/parisc64/parisc/ \
171 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ 171 -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
172 -e s/sh[234].*/sh/ ) 172 -e s/sh[234].*/sh/ )
173 173
174 # Cross compiling and selecting different set of gcc/bin-utils 174 # Cross compiling and selecting different set of gcc/bin-utils
175 # --------------------------------------------------------------------------- 175 # ---------------------------------------------------------------------------
176 # 176 #
177 # When performing cross compilation for other architectures ARCH shall be set 177 # When performing cross compilation for other architectures ARCH shall be set
178 # to the target architecture. (See arch/* for the possibilities). 178 # to the target architecture. (See arch/* for the possibilities).
179 # ARCH can be set during invocation of make: 179 # ARCH can be set during invocation of make:
180 # make ARCH=ia64 180 # make ARCH=ia64
181 # Another way is to have ARCH set in the environment. 181 # Another way is to have ARCH set in the environment.
182 # The default ARCH is the host where make is executed. 182 # The default ARCH is the host where make is executed.
183 183
184 # CROSS_COMPILE specify the prefix used for all executables used 184 # CROSS_COMPILE specify the prefix used for all executables used
185 # during compilation. Only gcc and related bin-utils executables 185 # during compilation. Only gcc and related bin-utils executables
186 # are prefixed with $(CROSS_COMPILE). 186 # are prefixed with $(CROSS_COMPILE).
187 # CROSS_COMPILE can be set on the command line 187 # CROSS_COMPILE can be set on the command line
188 # make CROSS_COMPILE=ia64-linux- 188 # make CROSS_COMPILE=ia64-linux-
189 # Alternatively CROSS_COMPILE can be set in the environment. 189 # Alternatively CROSS_COMPILE can be set in the environment.
190 # A third alternative is to store a setting in .config so that plain 190 # A third alternative is to store a setting in .config so that plain
191 # "make" in the configured kernel build directory always uses that. 191 # "make" in the configured kernel build directory always uses that.
192 # Default value for CROSS_COMPILE is not to prefix executables 192 # Default value for CROSS_COMPILE is not to prefix executables
193 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile 193 # Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile
194 export KBUILD_BUILDHOST := $(SUBARCH) 194 export KBUILD_BUILDHOST := $(SUBARCH)
195 ARCH ?= $(SUBARCH) 195 ARCH ?= $(SUBARCH)
196 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) 196 CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%)
197 197
198 # Architecture as present in compile.h 198 # Architecture as present in compile.h
199 UTS_MACHINE := $(ARCH) 199 UTS_MACHINE := $(ARCH)
200 SRCARCH := $(ARCH) 200 SRCARCH := $(ARCH)
201 201
202 # Additional ARCH settings for x86 202 # Additional ARCH settings for x86
203 ifeq ($(ARCH),i386) 203 ifeq ($(ARCH),i386)
204 SRCARCH := x86 204 SRCARCH := x86
205 endif 205 endif
206 ifeq ($(ARCH),x86_64) 206 ifeq ($(ARCH),x86_64)
207 SRCARCH := x86 207 SRCARCH := x86
208 endif 208 endif
209 209
210 # Additional ARCH settings for sparc 210 # Additional ARCH settings for sparc
211 ifeq ($(ARCH),sparc32) 211 ifeq ($(ARCH),sparc32)
212 SRCARCH := sparc 212 SRCARCH := sparc
213 endif 213 endif
214 ifeq ($(ARCH),sparc64) 214 ifeq ($(ARCH),sparc64)
215 SRCARCH := sparc 215 SRCARCH := sparc
216 endif 216 endif
217 217
218 # Additional ARCH settings for sh 218 # Additional ARCH settings for sh
219 ifeq ($(ARCH),sh64) 219 ifeq ($(ARCH),sh64)
220 SRCARCH := sh 220 SRCARCH := sh
221 endif 221 endif
222 222
223 # Additional ARCH settings for tile 223 # Additional ARCH settings for tile
224 ifeq ($(ARCH),tilepro) 224 ifeq ($(ARCH),tilepro)
225 SRCARCH := tile 225 SRCARCH := tile
226 endif 226 endif
227 ifeq ($(ARCH),tilegx) 227 ifeq ($(ARCH),tilegx)
228 SRCARCH := tile 228 SRCARCH := tile
229 endif 229 endif
230 230
231 # Where to locate arch specific headers 231 # Where to locate arch specific headers
232 hdr-arch := $(SRCARCH) 232 hdr-arch := $(SRCARCH)
233 233
234 ifeq ($(ARCH),m68knommu) 234 ifeq ($(ARCH),m68knommu)
235 hdr-arch := m68k 235 hdr-arch := m68k
236 endif 236 endif
237 237
238 KCONFIG_CONFIG ?= .config 238 KCONFIG_CONFIG ?= .config
239 export KCONFIG_CONFIG 239 export KCONFIG_CONFIG
240 240
241 # SHELL used by kbuild 241 # SHELL used by kbuild
242 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ 242 CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
243 else if [ -x /bin/bash ]; then echo /bin/bash; \ 243 else if [ -x /bin/bash ]; then echo /bin/bash; \
244 else echo sh; fi ; fi) 244 else echo sh; fi ; fi)
245 245
246 HOSTCC = gcc 246 HOSTCC = gcc
247 HOSTCXX = g++ 247 HOSTCXX = g++
248 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer 248 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer
249 HOSTCXXFLAGS = -O2 249 HOSTCXXFLAGS = -O2
250 250
251 # Decide whether to build built-in, modular, or both. 251 # Decide whether to build built-in, modular, or both.
252 # Normally, just do built-in. 252 # Normally, just do built-in.
253 253
254 KBUILD_MODULES := 254 KBUILD_MODULES :=
255 KBUILD_BUILTIN := 1 255 KBUILD_BUILTIN := 1
256 256
257 # If we have only "make modules", don't compile built-in objects. 257 # If we have only "make modules", don't compile built-in objects.
258 # When we're building modules with modversions, we need to consider 258 # When we're building modules with modversions, we need to consider
259 # the built-in objects during the descend as well, in order to 259 # the built-in objects during the descend as well, in order to
260 # make sure the checksums are up to date before we record them. 260 # make sure the checksums are up to date before we record them.
261 261
262 ifeq ($(MAKECMDGOALS),modules) 262 ifeq ($(MAKECMDGOALS),modules)
263 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) 263 KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1)
264 endif 264 endif
265 265
266 # If we have "make <whatever> modules", compile modules 266 # If we have "make <whatever> modules", compile modules
267 # in addition to whatever we do anyway. 267 # in addition to whatever we do anyway.
268 # Just "make" or "make all" shall build modules as well 268 # Just "make" or "make all" shall build modules as well
269 269
270 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) 270 ifneq ($(filter all _all modules,$(MAKECMDGOALS)),)
271 KBUILD_MODULES := 1 271 KBUILD_MODULES := 1
272 endif 272 endif
273 273
274 ifeq ($(MAKECMDGOALS),) 274 ifeq ($(MAKECMDGOALS),)
275 KBUILD_MODULES := 1 275 KBUILD_MODULES := 1
276 endif 276 endif
277 277
278 export KBUILD_MODULES KBUILD_BUILTIN 278 export KBUILD_MODULES KBUILD_BUILTIN
279 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD 279 export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD
280 280
281 # Beautify output 281 # Beautify output
282 # --------------------------------------------------------------------------- 282 # ---------------------------------------------------------------------------
283 # 283 #
284 # Normally, we echo the whole command before executing it. By making 284 # Normally, we echo the whole command before executing it. By making
285 # that echo $($(quiet)$(cmd)), we now have the possibility to set 285 # that echo $($(quiet)$(cmd)), we now have the possibility to set
286 # $(quiet) to choose other forms of output instead, e.g. 286 # $(quiet) to choose other forms of output instead, e.g.
287 # 287 #
288 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ 288 # quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@
289 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< 289 # cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $<
290 # 290 #
291 # If $(quiet) is empty, the whole command will be printed. 291 # If $(quiet) is empty, the whole command will be printed.
292 # If it is set to "quiet_", only the short version will be printed. 292 # If it is set to "quiet_", only the short version will be printed.
293 # If it is set to "silent_", nothing will be printed at all, since 293 # If it is set to "silent_", nothing will be printed at all, since
294 # the variable $(silent_cmd_cc_o_c) doesn't exist. 294 # the variable $(silent_cmd_cc_o_c) doesn't exist.
295 # 295 #
296 # A simple variant is to prefix commands with $(Q) - that's useful 296 # A simple variant is to prefix commands with $(Q) - that's useful
297 # for commands that shall be hidden in non-verbose mode. 297 # for commands that shall be hidden in non-verbose mode.
298 # 298 #
299 # $(Q)ln $@ :< 299 # $(Q)ln $@ :<
300 # 300 #
301 # If KBUILD_VERBOSE equals 0 then the above command will be hidden. 301 # If KBUILD_VERBOSE equals 0 then the above command will be hidden.
302 # If KBUILD_VERBOSE equals 1 then the above command is displayed. 302 # If KBUILD_VERBOSE equals 1 then the above command is displayed.
303 303
304 ifeq ($(KBUILD_VERBOSE),1) 304 ifeq ($(KBUILD_VERBOSE),1)
305 quiet = 305 quiet =
306 Q = 306 Q =
307 else 307 else
308 quiet=quiet_ 308 quiet=quiet_
309 Q = @ 309 Q = @
310 endif 310 endif
311 311
312 # If the user is running make -s (silent mode), suppress echoing of 312 # If the user is running make -s (silent mode), suppress echoing of
313 # commands 313 # commands
314 314
315 ifneq ($(filter s% -s%,$(MAKEFLAGS)),) 315 ifneq ($(filter s% -s%,$(MAKEFLAGS)),)
316 quiet=silent_ 316 quiet=silent_
317 endif 317 endif
318 318
319 export quiet Q KBUILD_VERBOSE 319 export quiet Q KBUILD_VERBOSE
320 320
321 321
322 # Look for make include files relative to root of kernel src 322 # Look for make include files relative to root of kernel src
323 MAKEFLAGS += --include-dir=$(srctree) 323 MAKEFLAGS += --include-dir=$(srctree)
324 324
325 # We need some generic definitions (do not try to remake the file). 325 # We need some generic definitions (do not try to remake the file).
326 $(srctree)/scripts/Kbuild.include: ; 326 $(srctree)/scripts/Kbuild.include: ;
327 include $(srctree)/scripts/Kbuild.include 327 include $(srctree)/scripts/Kbuild.include
328 328
329 # Make variables (CC, etc...) 329 # Make variables (CC, etc...)
330 330
331 AS = $(CROSS_COMPILE)as 331 AS = $(CROSS_COMPILE)as
332 LD = $(CROSS_COMPILE)ld 332 LD = $(CROSS_COMPILE)ld
333 CC = $(CROSS_COMPILE)gcc 333 CC = $(CROSS_COMPILE)gcc
334 CPP = $(CC) -E 334 CPP = $(CC) -E
335 AR = $(CROSS_COMPILE)ar 335 AR = $(CROSS_COMPILE)ar
336 NM = $(CROSS_COMPILE)nm 336 NM = $(CROSS_COMPILE)nm
337 STRIP = $(CROSS_COMPILE)strip 337 STRIP = $(CROSS_COMPILE)strip
338 OBJCOPY = $(CROSS_COMPILE)objcopy 338 OBJCOPY = $(CROSS_COMPILE)objcopy
339 OBJDUMP = $(CROSS_COMPILE)objdump 339 OBJDUMP = $(CROSS_COMPILE)objdump
340 AWK = awk 340 AWK = awk
341 GENKSYMS = scripts/genksyms/genksyms 341 GENKSYMS = scripts/genksyms/genksyms
342 INSTALLKERNEL := installkernel 342 INSTALLKERNEL := installkernel
343 DEPMOD = /sbin/depmod 343 DEPMOD = /sbin/depmod
344 KALLSYMS = scripts/kallsyms 344 KALLSYMS = scripts/kallsyms
345 PERL = perl 345 PERL = perl
346 CHECK = sparse 346 CHECK = sparse
347 347
348 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ 348 CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \
349 -Wbitwise -Wno-return-void $(CF) 349 -Wbitwise -Wno-return-void $(CF)
350 CFLAGS_MODULE = 350 CFLAGS_MODULE =
351 AFLAGS_MODULE = 351 AFLAGS_MODULE =
352 LDFLAGS_MODULE = 352 LDFLAGS_MODULE =
353 CFLAGS_KERNEL = 353 CFLAGS_KERNEL =
354 AFLAGS_KERNEL = 354 AFLAGS_KERNEL =
355 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage 355 CFLAGS_GCOV = -fprofile-arcs -ftest-coverage
356 356
357 357
358 # Use LINUXINCLUDE when you must reference the include/ directory. 358 # Use LINUXINCLUDE when you must reference the include/ directory.
359 # Needed to be compatible with the O= option 359 # Needed to be compatible with the O= option
360 LINUXINCLUDE := -I$(srctree)/arch/$(hdr-arch)/include \ 360 LINUXINCLUDE := -I$(srctree)/arch/$(hdr-arch)/include \
361 -Iarch/$(hdr-arch)/include/generated -Iinclude \ 361 -Iarch/$(hdr-arch)/include/generated -Iinclude \
362 $(if $(KBUILD_SRC), -I$(srctree)/include) \ 362 $(if $(KBUILD_SRC), -I$(srctree)/include) \
363 -include $(srctree)/include/linux/kconfig.h 363 -include $(srctree)/include/linux/kconfig.h
364 364
365 KBUILD_CPPFLAGS := -D__KERNEL__ 365 KBUILD_CPPFLAGS := -D__KERNEL__
366 366
367 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ 367 KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \
368 -fno-strict-aliasing -fno-common \ 368 -fno-strict-aliasing -fno-common \
369 -Werror-implicit-function-declaration \ 369 -Werror-implicit-function-declaration \
370 -Wno-format-security \ 370 -Wno-format-security \
371 -fno-delete-null-pointer-checks 371 -fno-delete-null-pointer-checks
372 KBUILD_AFLAGS_KERNEL := 372 KBUILD_AFLAGS_KERNEL :=
373 KBUILD_CFLAGS_KERNEL := 373 KBUILD_CFLAGS_KERNEL :=
374 KBUILD_AFLAGS := -D__ASSEMBLY__ 374 KBUILD_AFLAGS := -D__ASSEMBLY__
375 KBUILD_AFLAGS_MODULE := -DMODULE 375 KBUILD_AFLAGS_MODULE := -DMODULE
376 KBUILD_CFLAGS_MODULE := -DMODULE 376 KBUILD_CFLAGS_MODULE := -DMODULE
377 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds 377 KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds
378 378
379 # Read KERNELRELEASE from include/config/kernel.release (if it exists) 379 # Read KERNELRELEASE from include/config/kernel.release (if it exists)
380 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) 380 KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null)
381 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) 381 KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION)
382 382
383 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION 383 export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION
384 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC 384 export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC
385 export CPP AR NM STRIP OBJCOPY OBJDUMP 385 export CPP AR NM STRIP OBJCOPY OBJDUMP
386 export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE 386 export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE
387 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS 387 export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS
388 388
389 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS 389 export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS
390 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV 390 export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV
391 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE 391 export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE
392 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE 392 export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE
393 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL 393 export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL
394 export KBUILD_ARFLAGS 394 export KBUILD_ARFLAGS
395 395
396 # When compiling out-of-tree modules, put MODVERDIR in the module 396 # When compiling out-of-tree modules, put MODVERDIR in the module
397 # tree rather than in the kernel tree. The kernel tree might 397 # tree rather than in the kernel tree. The kernel tree might
398 # even be read-only. 398 # even be read-only.
399 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions 399 export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions
400 400
401 # Files to ignore in find ... statements 401 # Files to ignore in find ... statements
402 402
403 RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o 403 RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS -o -name .pc -o -name .hg -o -name .git \) -prune -o
404 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git 404 export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn --exclude CVS --exclude .pc --exclude .hg --exclude .git
405 405
406 # =========================================================================== 406 # ===========================================================================
407 # Rules shared between *config targets and build targets 407 # Rules shared between *config targets and build targets
408 408
409 # Basic helpers built in scripts/ 409 # Basic helpers built in scripts/
410 PHONY += scripts_basic 410 PHONY += scripts_basic
411 scripts_basic: 411 scripts_basic:
412 $(Q)$(MAKE) $(build)=scripts/basic 412 $(Q)$(MAKE) $(build)=scripts/basic
413 $(Q)rm -f .tmp_quiet_recordmcount 413 $(Q)rm -f .tmp_quiet_recordmcount
414 414
415 # To avoid any implicit rule to kick in, define an empty command. 415 # To avoid any implicit rule to kick in, define an empty command.
416 scripts/basic/%: scripts_basic ; 416 scripts/basic/%: scripts_basic ;
417 417
418 PHONY += outputmakefile 418 PHONY += outputmakefile
419 # outputmakefile generates a Makefile in the output directory, if using a 419 # outputmakefile generates a Makefile in the output directory, if using a
420 # separate output directory. This allows convenient use of make in the 420 # separate output directory. This allows convenient use of make in the
421 # output directory. 421 # output directory.
422 outputmakefile: 422 outputmakefile:
423 ifneq ($(KBUILD_SRC),) 423 ifneq ($(KBUILD_SRC),)
424 $(Q)ln -fsn $(srctree) source 424 $(Q)ln -fsn $(srctree) source
425 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ 425 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \
426 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) 426 $(srctree) $(objtree) $(VERSION) $(PATCHLEVEL)
427 endif 427 endif
428 428
429 # Support for using generic headers in asm-generic 429 # Support for using generic headers in asm-generic
430 PHONY += asm-generic 430 PHONY += asm-generic
431 asm-generic: 431 asm-generic:
432 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ 432 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \
433 obj=arch/$(SRCARCH)/include/generated/asm 433 obj=arch/$(SRCARCH)/include/generated/asm
434 434
435 # To make sure we do not include .config for any of the *config targets 435 # To make sure we do not include .config for any of the *config targets
436 # catch them early, and hand them over to scripts/kconfig/Makefile 436 # catch them early, and hand them over to scripts/kconfig/Makefile
437 # It is allowed to specify more targets when calling make, including 437 # It is allowed to specify more targets when calling make, including
438 # mixing *config targets and build targets. 438 # mixing *config targets and build targets.
439 # For example 'make oldconfig all'. 439 # For example 'make oldconfig all'.
440 # Detect when mixed targets is specified, and make a second invocation 440 # Detect when mixed targets is specified, and make a second invocation
441 # of make so .config is not included in this case either (for *config). 441 # of make so .config is not included in this case either (for *config).
442 442
443 no-dot-config-targets := clean mrproper distclean \ 443 no-dot-config-targets := clean mrproper distclean \
444 cscope gtags TAGS tags help %docs check% coccicheck \ 444 cscope gtags TAGS tags help %docs check% coccicheck \
445 include/linux/version.h headers_% archheaders \ 445 include/linux/version.h headers_% archheaders \
446 kernelversion %src-pkg 446 kernelversion %src-pkg
447 447
448 config-targets := 0 448 config-targets := 0
449 mixed-targets := 0 449 mixed-targets := 0
450 dot-config := 1 450 dot-config := 1
451 451
452 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) 452 ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),)
453 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) 453 ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),)
454 dot-config := 0 454 dot-config := 0
455 endif 455 endif
456 endif 456 endif
457 457
458 ifeq ($(KBUILD_EXTMOD),) 458 ifeq ($(KBUILD_EXTMOD),)
459 ifneq ($(filter config %config,$(MAKECMDGOALS)),) 459 ifneq ($(filter config %config,$(MAKECMDGOALS)),)
460 config-targets := 1 460 config-targets := 1
461 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) 461 ifneq ($(filter-out config %config,$(MAKECMDGOALS)),)
462 mixed-targets := 1 462 mixed-targets := 1
463 endif 463 endif
464 endif 464 endif
465 endif 465 endif
466 466
467 ifeq ($(mixed-targets),1) 467 ifeq ($(mixed-targets),1)
468 # =========================================================================== 468 # ===========================================================================
469 # We're called with mixed targets (*config and build targets). 469 # We're called with mixed targets (*config and build targets).
470 # Handle them one by one. 470 # Handle them one by one.
471 471
472 %:: FORCE 472 %:: FORCE
473 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ 473 $(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@
474 474
475 else 475 else
476 ifeq ($(config-targets),1) 476 ifeq ($(config-targets),1)
477 # =========================================================================== 477 # ===========================================================================
478 # *config targets only - make sure prerequisites are updated, and descend 478 # *config targets only - make sure prerequisites are updated, and descend
479 # in scripts/kconfig to make the *config target 479 # in scripts/kconfig to make the *config target
480 480
481 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. 481 # Read arch specific Makefile to set KBUILD_DEFCONFIG as needed.
482 # KBUILD_DEFCONFIG may point out an alternative default configuration 482 # KBUILD_DEFCONFIG may point out an alternative default configuration
483 # used for 'make defconfig' 483 # used for 'make defconfig'
484 include $(srctree)/arch/$(SRCARCH)/Makefile 484 include $(srctree)/arch/$(SRCARCH)/Makefile
485 export KBUILD_DEFCONFIG KBUILD_KCONFIG 485 export KBUILD_DEFCONFIG KBUILD_KCONFIG
486 486
487 config: scripts_basic outputmakefile FORCE 487 config: scripts_basic outputmakefile FORCE
488 $(Q)mkdir -p include/linux include/config 488 $(Q)mkdir -p include/linux include/config
489 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 489 $(Q)$(MAKE) $(build)=scripts/kconfig $@
490 490
491 %config: scripts_basic outputmakefile FORCE 491 %config: scripts_basic outputmakefile FORCE
492 $(Q)mkdir -p include/linux include/config 492 $(Q)mkdir -p include/linux include/config
493 $(Q)$(MAKE) $(build)=scripts/kconfig $@ 493 $(Q)$(MAKE) $(build)=scripts/kconfig $@
494 494
495 else 495 else
496 # =========================================================================== 496 # ===========================================================================
497 # Build targets only - this includes vmlinux, arch specific targets, clean 497 # Build targets only - this includes vmlinux, arch specific targets, clean
498 # targets and others. In general all targets except *config targets. 498 # targets and others. In general all targets except *config targets.
499 499
500 ifeq ($(KBUILD_EXTMOD),) 500 ifeq ($(KBUILD_EXTMOD),)
501 # Additional helpers built in scripts/ 501 # Additional helpers built in scripts/
502 # Carefully list dependencies so we do not try to build scripts twice 502 # Carefully list dependencies so we do not try to build scripts twice
503 # in parallel 503 # in parallel
504 PHONY += scripts 504 PHONY += scripts
505 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf 505 scripts: scripts_basic include/config/auto.conf include/config/tristate.conf
506 $(Q)$(MAKE) $(build)=$(@) 506 $(Q)$(MAKE) $(build)=$(@)
507 507
508 # Objects we will link into vmlinux / subdirs we need to visit 508 # Objects we will link into vmlinux / subdirs we need to visit
509 init-y := init/ 509 init-y := init/
510 drivers-y := drivers/ sound/ firmware/ 510 drivers-y := drivers/ sound/ firmware/
511 net-y := net/ 511 net-y := net/
512 libs-y := lib/ 512 libs-y := lib/
513 core-y := usr/ 513 core-y := usr/
514 endif # KBUILD_EXTMOD 514 endif # KBUILD_EXTMOD
515 515
516 ifeq ($(dot-config),1) 516 ifeq ($(dot-config),1)
517 # Read in config 517 # Read in config
518 -include include/config/auto.conf 518 -include include/config/auto.conf
519 519
520 ifeq ($(KBUILD_EXTMOD),) 520 ifeq ($(KBUILD_EXTMOD),)
521 # Read in dependencies to all Kconfig* files, make sure to run 521 # Read in dependencies to all Kconfig* files, make sure to run
522 # oldconfig if changes are detected. 522 # oldconfig if changes are detected.
523 -include include/config/auto.conf.cmd 523 -include include/config/auto.conf.cmd
524 524
525 # To avoid any implicit rule to kick in, define an empty command 525 # To avoid any implicit rule to kick in, define an empty command
526 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; 526 $(KCONFIG_CONFIG) include/config/auto.conf.cmd: ;
527 527
528 # If .config is newer than include/config/auto.conf, someone tinkered 528 # If .config is newer than include/config/auto.conf, someone tinkered
529 # with it and forgot to run make oldconfig. 529 # with it and forgot to run make oldconfig.
530 # if auto.conf.cmd is missing then we are probably in a cleaned tree so 530 # if auto.conf.cmd is missing then we are probably in a cleaned tree so
531 # we execute the config step to be sure to catch updated Kconfig files 531 # we execute the config step to be sure to catch updated Kconfig files
532 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd 532 include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd
533 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig 533 $(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig
534 else 534 else
535 # external modules needs include/generated/autoconf.h and include/config/auto.conf 535 # external modules needs include/generated/autoconf.h and include/config/auto.conf
536 # but do not care if they are up-to-date. Use auto.conf to trigger the test 536 # but do not care if they are up-to-date. Use auto.conf to trigger the test
537 PHONY += include/config/auto.conf 537 PHONY += include/config/auto.conf
538 538
539 include/config/auto.conf: 539 include/config/auto.conf:
540 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ 540 $(Q)test -e include/generated/autoconf.h -a -e $@ || ( \
541 echo; \ 541 echo; \
542 echo " ERROR: Kernel configuration is invalid."; \ 542 echo " ERROR: Kernel configuration is invalid."; \
543 echo " include/generated/autoconf.h or $@ are missing.";\ 543 echo " include/generated/autoconf.h or $@ are missing.";\
544 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ 544 echo " Run 'make oldconfig && make prepare' on kernel src to fix it."; \
545 echo; \ 545 echo; \
546 /bin/false) 546 /bin/false)
547 547
548 endif # KBUILD_EXTMOD 548 endif # KBUILD_EXTMOD
549 549
550 else 550 else
551 # Dummy target needed, because used as prerequisite 551 # Dummy target needed, because used as prerequisite
552 include/config/auto.conf: ; 552 include/config/auto.conf: ;
553 endif # $(dot-config) 553 endif # $(dot-config)
554 554
555 # The all: target is the default when no target is given on the 555 # The all: target is the default when no target is given on the
556 # command line. 556 # command line.
557 # This allow a user to issue only 'make' to build a kernel including modules 557 # This allow a user to issue only 'make' to build a kernel including modules
558 # Defaults to vmlinux, but the arch makefile usually adds further targets 558 # Defaults to vmlinux, but the arch makefile usually adds further targets
559 all: vmlinux 559 all: vmlinux
560 560
561 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE 561 ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
562 KBUILD_CFLAGS += -Os 562 KBUILD_CFLAGS += -Os
563 else 563 else
564 KBUILD_CFLAGS += -O2 564 KBUILD_CFLAGS += -O2
565 endif 565 endif
566 566
567 include $(srctree)/arch/$(SRCARCH)/Makefile 567 include $(srctree)/arch/$(SRCARCH)/Makefile
568 568
569 ifneq ($(CONFIG_FRAME_WARN),0) 569 ifneq ($(CONFIG_FRAME_WARN),0)
570 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) 570 KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
571 endif 571 endif
572 572
573 # Force gcc to behave correct even for buggy distributions 573 # Force gcc to behave correct even for buggy distributions
574 ifndef CONFIG_CC_STACKPROTECTOR 574 ifndef CONFIG_CC_STACKPROTECTOR
575 KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) 575 KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
576 endif 576 endif
577 577
578 # This warning generated too much noise in a regular build. 578 # This warning generated too much noise in a regular build.
579 # Use make W=1 to enable this warning (see scripts/Makefile.build) 579 # Use make W=1 to enable this warning (see scripts/Makefile.build)
580 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) 580 KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable)
581 581
582 ifdef CONFIG_FRAME_POINTER 582 ifdef CONFIG_FRAME_POINTER
583 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls 583 KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
584 else 584 else
585 # Some targets (ARM with Thumb2, for example), can't be built with frame 585 # Some targets (ARM with Thumb2, for example), can't be built with frame
586 # pointers. For those, we don't have FUNCTION_TRACER automatically 586 # pointers. For those, we don't have FUNCTION_TRACER automatically
587 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is 587 # select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is
588 # incompatible with -fomit-frame-pointer with current GCC, so we don't use 588 # incompatible with -fomit-frame-pointer with current GCC, so we don't use
589 # -fomit-frame-pointer with FUNCTION_TRACER. 589 # -fomit-frame-pointer with FUNCTION_TRACER.
590 ifndef CONFIG_FUNCTION_TRACER 590 ifndef CONFIG_FUNCTION_TRACER
591 KBUILD_CFLAGS += -fomit-frame-pointer 591 KBUILD_CFLAGS += -fomit-frame-pointer
592 endif 592 endif
593 endif 593 endif
594 594
595 ifdef CONFIG_DEBUG_INFO 595 ifdef CONFIG_DEBUG_INFO
596 KBUILD_CFLAGS += -g 596 KBUILD_CFLAGS += -g
597 KBUILD_AFLAGS += -gdwarf-2 597 KBUILD_AFLAGS += -gdwarf-2
598 endif 598 endif
599 599
600 ifdef CONFIG_DEBUG_INFO_REDUCED 600 ifdef CONFIG_DEBUG_INFO_REDUCED
601 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) 601 KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly)
602 endif 602 endif
603 603
604 ifdef CONFIG_FUNCTION_TRACER 604 ifdef CONFIG_FUNCTION_TRACER
605 KBUILD_CFLAGS += -pg 605 KBUILD_CFLAGS += -pg
606 ifdef CONFIG_DYNAMIC_FTRACE 606 ifdef CONFIG_DYNAMIC_FTRACE
607 ifdef CONFIG_HAVE_C_RECORDMCOUNT 607 ifdef CONFIG_HAVE_C_RECORDMCOUNT
608 BUILD_C_RECORDMCOUNT := y 608 BUILD_C_RECORDMCOUNT := y
609 export BUILD_C_RECORDMCOUNT 609 export BUILD_C_RECORDMCOUNT
610 endif 610 endif
611 endif 611 endif
612 endif 612 endif
613 613
614 # We trigger additional mismatches with less inlining 614 # We trigger additional mismatches with less inlining
615 ifdef CONFIG_DEBUG_SECTION_MISMATCH 615 ifdef CONFIG_DEBUG_SECTION_MISMATCH
616 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) 616 KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
617 endif 617 endif
618 618
619 # arch Makefile may override CC so keep this after arch Makefile is included 619 # arch Makefile may override CC so keep this after arch Makefile is included
620 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) 620 NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
621 CHECKFLAGS += $(NOSTDINC_FLAGS) 621 CHECKFLAGS += $(NOSTDINC_FLAGS)
622 622
623 # warn about C99 declaration after statement 623 # warn about C99 declaration after statement
624 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) 624 KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
625 625
626 # disable pointer signed / unsigned warnings in gcc 4.0 626 # disable pointer signed / unsigned warnings in gcc 4.0
627 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) 627 KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign)
628 628
629 # disable invalid "can't wrap" optimizations for signed / pointers 629 # disable invalid "can't wrap" optimizations for signed / pointers
630 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) 630 KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow)
631 631
632 # conserve stack if available 632 # conserve stack if available
633 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) 633 KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
634 634
635 # use the deterministic mode of AR if available 635 # use the deterministic mode of AR if available
636 KBUILD_ARFLAGS := $(call ar-option,D) 636 KBUILD_ARFLAGS := $(call ar-option,D)
637 637
638 # check for 'asm goto' 638 # check for 'asm goto'
639 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) 639 ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y)
640 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO 640 KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO
641 endif 641 endif
642 642
643 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments 643 # Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
644 # But warn user when we do so 644 # But warn user when we do so
645 warn-assign = \ 645 warn-assign = \
646 $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)") 646 $(warning "WARNING: Appending $$K$(1) ($(K$(1))) from $(origin K$(1)) to kernel $$$(1)")
647 647
648 ifneq ($(KCPPFLAGS),) 648 ifneq ($(KCPPFLAGS),)
649 $(call warn-assign,CPPFLAGS) 649 $(call warn-assign,CPPFLAGS)
650 KBUILD_CPPFLAGS += $(KCPPFLAGS) 650 KBUILD_CPPFLAGS += $(KCPPFLAGS)
651 endif 651 endif
652 ifneq ($(KAFLAGS),) 652 ifneq ($(KAFLAGS),)
653 $(call warn-assign,AFLAGS) 653 $(call warn-assign,AFLAGS)
654 KBUILD_AFLAGS += $(KAFLAGS) 654 KBUILD_AFLAGS += $(KAFLAGS)
655 endif 655 endif
656 ifneq ($(KCFLAGS),) 656 ifneq ($(KCFLAGS),)
657 $(call warn-assign,CFLAGS) 657 $(call warn-assign,CFLAGS)
658 KBUILD_CFLAGS += $(KCFLAGS) 658 KBUILD_CFLAGS += $(KCFLAGS)
659 endif 659 endif
660 660
661 # Use --build-id when available. 661 # Use --build-id when available.
662 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ 662 LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\
663 $(call cc-ldoption, -Wl$(comma)--build-id,)) 663 $(call cc-ldoption, -Wl$(comma)--build-id,))
664 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) 664 KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID)
665 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) 665 LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID)
666 666
667 ifeq ($(CONFIG_STRIP_ASM_SYMS),y) 667 ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
668 LDFLAGS_vmlinux += $(call ld-option, -X,) 668 LDFLAGS_vmlinux += $(call ld-option, -X,)
669 endif 669 endif
670 670
671 # Default kernel image to build when no specific target is given. 671 # Default kernel image to build when no specific target is given.
672 # KBUILD_IMAGE may be overruled on the command line or 672 # KBUILD_IMAGE may be overruled on the command line or
673 # set in the environment 673 # set in the environment
674 # Also any assignments in arch/$(ARCH)/Makefile take precedence over 674 # Also any assignments in arch/$(ARCH)/Makefile take precedence over
675 # this default value 675 # this default value
676 export KBUILD_IMAGE ?= vmlinux 676 export KBUILD_IMAGE ?= vmlinux
677 677
678 # 678 #
679 # INSTALL_PATH specifies where to place the updated kernel and system map 679 # INSTALL_PATH specifies where to place the updated kernel and system map
680 # images. Default is /boot, but you can set it to other values 680 # images. Default is /boot, but you can set it to other values
681 export INSTALL_PATH ?= /boot 681 export INSTALL_PATH ?= /boot
682 682
683 # 683 #
684 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory 684 # INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory
685 # relocations required by build roots. This is not defined in the 685 # relocations required by build roots. This is not defined in the
686 # makefile but the argument can be passed to make if needed. 686 # makefile but the argument can be passed to make if needed.
687 # 687 #
688 688
689 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) 689 MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE)
690 export MODLIB 690 export MODLIB
691 691
692 # 692 #
693 # INSTALL_MOD_STRIP, if defined, will cause modules to be 693 # INSTALL_MOD_STRIP, if defined, will cause modules to be
694 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then 694 # stripped after they are installed. If INSTALL_MOD_STRIP is '1', then
695 # the default option --strip-debug will be used. Otherwise, 695 # the default option --strip-debug will be used. Otherwise,
696 # INSTALL_MOD_STRIP value will be used as the options to the strip command. 696 # INSTALL_MOD_STRIP value will be used as the options to the strip command.
697 697
698 ifdef INSTALL_MOD_STRIP 698 ifdef INSTALL_MOD_STRIP
699 ifeq ($(INSTALL_MOD_STRIP),1) 699 ifeq ($(INSTALL_MOD_STRIP),1)
700 mod_strip_cmd = $(STRIP) --strip-debug 700 mod_strip_cmd = $(STRIP) --strip-debug
701 else 701 else
702 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) 702 mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP)
703 endif # INSTALL_MOD_STRIP=1 703 endif # INSTALL_MOD_STRIP=1
704 else 704 else
705 mod_strip_cmd = true 705 mod_strip_cmd = true
706 endif # INSTALL_MOD_STRIP 706 endif # INSTALL_MOD_STRIP
707 export mod_strip_cmd 707 export mod_strip_cmd
708 708
709 709
710 ifeq ($(KBUILD_EXTMOD),) 710 ifeq ($(KBUILD_EXTMOD),)
711 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ 711 core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
712 712
713 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ 713 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
714 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \ 714 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
715 $(net-y) $(net-m) $(libs-y) $(libs-m))) 715 $(net-y) $(net-m) $(libs-y) $(libs-m)))
716 716
717 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ 717 vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \
718 $(init-n) $(init-) \ 718 $(init-n) $(init-) \
719 $(core-n) $(core-) $(drivers-n) $(drivers-) \ 719 $(core-n) $(core-) $(drivers-n) $(drivers-) \
720 $(net-n) $(net-) $(libs-n) $(libs-)))) 720 $(net-n) $(net-) $(libs-n) $(libs-))))
721 721
722 init-y := $(patsubst %/, %/built-in.o, $(init-y)) 722 init-y := $(patsubst %/, %/built-in.o, $(init-y))
723 core-y := $(patsubst %/, %/built-in.o, $(core-y)) 723 core-y := $(patsubst %/, %/built-in.o, $(core-y))
724 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) 724 drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y))
725 net-y := $(patsubst %/, %/built-in.o, $(net-y)) 725 net-y := $(patsubst %/, %/built-in.o, $(net-y))
726 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) 726 libs-y1 := $(patsubst %/, %/lib.a, $(libs-y))
727 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) 727 libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y))
728 libs-y := $(libs-y1) $(libs-y2) 728 libs-y := $(libs-y1) $(libs-y2)
729 729
730 # Build vmlinux 730 # Build vmlinux
731 # --------------------------------------------------------------------------- 731 # ---------------------------------------------------------------------------
732 # vmlinux is built from the objects selected by $(vmlinux-init) and 732 # vmlinux is built from the objects selected by $(vmlinux-init) and
733 # $(vmlinux-main). Most are built-in.o files from top-level directories 733 # $(vmlinux-main). Most are built-in.o files from top-level directories
734 # in the kernel tree, others are specified in arch/$(ARCH)/Makefile. 734 # in the kernel tree, others are specified in arch/$(ARCH)/Makefile.
735 # Ordering when linking is important, and $(vmlinux-init) must be first. 735 # Ordering when linking is important, and $(vmlinux-init) must be first.
736 # 736 #
737 # vmlinux 737 # vmlinux
738 # ^ 738 # ^
739 # | 739 # |
740 # +-< $(vmlinux-init) 740 # +-< $(vmlinux-init)
741 # | +--< init/version.o + more 741 # | +--< init/version.o + more
742 # | 742 # |
743 # +--< $(vmlinux-main) 743 # +--< $(vmlinux-main)
744 # | +--< driver/built-in.o mm/built-in.o + more 744 # | +--< driver/built-in.o mm/built-in.o + more
745 # | 745 # |
746 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section) 746 # +-< kallsyms.o (see description in CONFIG_KALLSYMS section)
747 # 747 #
748 # vmlinux version (uname -v) cannot be updated during normal 748 # vmlinux version (uname -v) cannot be updated during normal
749 # descending-into-subdirs phase since we do not yet know if we need to 749 # descending-into-subdirs phase since we do not yet know if we need to
750 # update vmlinux. 750 # update vmlinux.
751 # Therefore this step is delayed until just before final link of vmlinux - 751 # Therefore this step is delayed until just before final link of vmlinux -
752 # except in the kallsyms case where it is done just before adding the 752 # except in the kallsyms case where it is done just before adding the
753 # symbols to the kernel. 753 # symbols to the kernel.
754 # 754 #
755 # System.map is generated to document addresses of all kernel symbols 755 # System.map is generated to document addresses of all kernel symbols
756 756
757 vmlinux-init := $(head-y) $(init-y) 757 vmlinux-init := $(head-y) $(init-y)
758 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y) 758 vmlinux-main := $(core-y) $(libs-y) $(drivers-y) $(net-y)
759 vmlinux-all := $(vmlinux-init) $(vmlinux-main) 759 vmlinux-all := $(vmlinux-init) $(vmlinux-main)
760 vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds 760 vmlinux-lds := arch/$(SRCARCH)/kernel/vmlinux.lds
761 export KBUILD_VMLINUX_OBJS := $(vmlinux-all) 761 export KBUILD_VMLINUX_OBJS := $(vmlinux-all)
762 762
763 # Rule to link vmlinux - also used during CONFIG_KALLSYMS 763 # Rule to link vmlinux - also used during CONFIG_KALLSYMS
764 # May be overridden by arch/$(ARCH)/Makefile 764 # May be overridden by arch/$(ARCH)/Makefile
765 quiet_cmd_vmlinux__ ?= LD $@ 765 quiet_cmd_vmlinux__ ?= LD $@
766 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \ 766 cmd_vmlinux__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) -o $@ \
767 -T $(vmlinux-lds) $(vmlinux-init) \ 767 -T $(vmlinux-lds) $(vmlinux-init) \
768 --start-group $(vmlinux-main) --end-group \ 768 --start-group $(vmlinux-main) --end-group \
769 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^) 769 $(filter-out $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o FORCE ,$^)
770 770
771 # Generate new vmlinux version 771 # Generate new vmlinux version
772 quiet_cmd_vmlinux_version = GEN .version 772 quiet_cmd_vmlinux_version = GEN .version
773 cmd_vmlinux_version = set -e; \ 773 cmd_vmlinux_version = set -e; \
774 if [ ! -r .version ]; then \ 774 if [ ! -r .version ]; then \
775 rm -f .version; \ 775 rm -f .version; \
776 echo 1 >.version; \ 776 echo 1 >.version; \
777 else \ 777 else \
778 mv .version .old_version; \ 778 mv .version .old_version; \
779 expr 0$$(cat .old_version) + 1 >.version; \ 779 expr 0$$(cat .old_version) + 1 >.version; \
780 fi; \ 780 fi; \
781 $(MAKE) $(build)=init 781 $(MAKE) $(build)=init
782 782
783 # Generate System.map 783 # Generate System.map
784 quiet_cmd_sysmap = SYSMAP 784 quiet_cmd_sysmap = SYSMAP
785 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap 785 cmd_sysmap = $(CONFIG_SHELL) $(srctree)/scripts/mksysmap
786 786
787 # Link of vmlinux 787 # Link of vmlinux
788 # If CONFIG_KALLSYMS is set .version is already updated 788 # If CONFIG_KALLSYMS is set .version is already updated
789 # Generate System.map and verify that the content is consistent 789 # Generate System.map and verify that the content is consistent
790 # Use + in front of the vmlinux_version rule to silent warning with make -j2 790 # Use + in front of the vmlinux_version rule to silent warning with make -j2
791 # First command is ':' to allow us to use + in front of the rule 791 # First command is ':' to allow us to use + in front of the rule
792 define rule_vmlinux__ 792 define rule_vmlinux__
793 : 793 :
794 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version)) 794 $(if $(CONFIG_KALLSYMS),,+$(call cmd,vmlinux_version))
795 795
796 $(call cmd,vmlinux__) 796 $(call cmd,vmlinux__)
797 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 797 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
798 798
799 $(Q)$(if $($(quiet)cmd_sysmap), \ 799 $(Q)$(if $($(quiet)cmd_sysmap), \
800 echo ' $($(quiet)cmd_sysmap) System.map' &&) \ 800 echo ' $($(quiet)cmd_sysmap) System.map' &&) \
801 $(cmd_sysmap) $@ System.map; \ 801 $(cmd_sysmap) $@ System.map; \
802 if [ $$? -ne 0 ]; then \ 802 if [ $$? -ne 0 ]; then \
803 rm -f $@; \ 803 rm -f $@; \
804 /bin/false; \ 804 /bin/false; \
805 fi; 805 fi;
806 $(verify_kallsyms) 806 $(verify_kallsyms)
807 endef 807 endef
808 808
809 809
810 ifdef CONFIG_KALLSYMS 810 ifdef CONFIG_KALLSYMS
811 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o) 811 # Generate section listing all symbols and add it into vmlinux $(kallsyms.o)
812 # It's a three stage process: 812 # It's a three stage process:
813 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is 813 # o .tmp_vmlinux1 has all symbols and sections, but __kallsyms is
814 # empty 814 # empty
815 # Running kallsyms on that gives us .tmp_kallsyms1.o with 815 # Running kallsyms on that gives us .tmp_kallsyms1.o with
816 # the right size - vmlinux version (uname -v) is updated during this step 816 # the right size - vmlinux version (uname -v) is updated during this step
817 # o .tmp_vmlinux2 now has a __kallsyms section of the right size, 817 # o .tmp_vmlinux2 now has a __kallsyms section of the right size,
818 # but due to the added section, some addresses have shifted. 818 # but due to the added section, some addresses have shifted.
819 # From here, we generate a correct .tmp_kallsyms2.o 819 # From here, we generate a correct .tmp_kallsyms2.o
820 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux. 820 # o The correct .tmp_kallsyms2.o is linked into the final vmlinux.
821 # o Verify that the System.map from vmlinux matches the map from 821 # o Verify that the System.map from vmlinux matches the map from
822 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly. 822 # .tmp_vmlinux2, just in case we did not generate kallsyms correctly.
823 # o If 'make KALLSYMS_EXTRA_PASS=1" was used, do an extra pass using 823 # o If 'make KALLSYMS_EXTRA_PASS=1" was used, do an extra pass using
824 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a 824 # .tmp_vmlinux3 and .tmp_kallsyms3.o. This is only meant as a
825 # temporary bypass to allow the kernel to be built while the 825 # temporary bypass to allow the kernel to be built while the
826 # maintainers work out what went wrong with kallsyms. 826 # maintainers work out what went wrong with kallsyms.
827 827
828 last_kallsyms := 2 828 last_kallsyms := 2
829 829
830 ifdef KALLSYMS_EXTRA_PASS 830 ifdef KALLSYMS_EXTRA_PASS
831 ifneq ($(KALLSYMS_EXTRA_PASS),0) 831 ifneq ($(KALLSYMS_EXTRA_PASS),0)
832 last_kallsyms := 3 832 last_kallsyms := 3
833 endif 833 endif
834 endif 834 endif
835 835
836 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o 836 kallsyms.o := .tmp_kallsyms$(last_kallsyms).o
837 837
838 define verify_kallsyms 838 define verify_kallsyms
839 $(Q)$(if $($(quiet)cmd_sysmap), \ 839 $(Q)$(if $($(quiet)cmd_sysmap), \
840 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \ 840 echo ' $($(quiet)cmd_sysmap) .tmp_System.map' &&) \
841 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map 841 $(cmd_sysmap) .tmp_vmlinux$(last_kallsyms) .tmp_System.map
842 $(Q)cmp -s System.map .tmp_System.map || \ 842 $(Q)cmp -s System.map .tmp_System.map || \
843 (echo Inconsistent kallsyms data; \ 843 (echo Inconsistent kallsyms data; \
844 echo This is a bug - please report about it; \ 844 echo This is a bug - please report about it; \
845 echo Try "make KALLSYMS_EXTRA_PASS=1" as a workaround; \ 845 echo Try "make KALLSYMS_EXTRA_PASS=1" as a workaround; \
846 rm .tmp_kallsyms* ; /bin/false ) 846 rm .tmp_kallsyms* ; /bin/false )
847 endef 847 endef
848 848
849 # Update vmlinux version before link 849 # Update vmlinux version before link
850 # Use + in front of this rule to silent warning about make -j1 850 # Use + in front of this rule to silent warning about make -j1
851 # First command is ':' to allow us to use + in front of this rule 851 # First command is ':' to allow us to use + in front of this rule
852 cmd_ksym_ld = $(cmd_vmlinux__) 852 cmd_ksym_ld = $(cmd_vmlinux__)
853 define rule_ksym_ld 853 define rule_ksym_ld
854 : 854 :
855 +$(call cmd,vmlinux_version) 855 +$(call cmd,vmlinux_version)
856 $(call cmd,vmlinux__) 856 $(call cmd,vmlinux__)
857 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd 857 $(Q)echo 'cmd_$@ := $(cmd_vmlinux__)' > $(@D)/.$(@F).cmd
858 endef 858 endef
859 859
860 # Generate .S file with all kernel symbols 860 # Generate .S file with all kernel symbols
861 quiet_cmd_kallsyms = KSYM $@ 861 quiet_cmd_kallsyms = KSYM $@
862 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \ 862 cmd_kallsyms = $(NM) -n $< | $(KALLSYMS) \
863 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@ 863 $(if $(CONFIG_KALLSYMS_ALL),--all-symbols) > $@
864 864
865 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE 865 .tmp_kallsyms1.o .tmp_kallsyms2.o .tmp_kallsyms3.o: %.o: %.S scripts FORCE
866 $(call if_changed_dep,as_o_S) 866 $(call if_changed_dep,as_o_S)
867 867
868 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS) 868 .tmp_kallsyms%.S: .tmp_vmlinux% $(KALLSYMS)
869 $(call cmd,kallsyms) 869 $(call cmd,kallsyms)
870 870
871 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version 871 # .tmp_vmlinux1 must be complete except kallsyms, so update vmlinux version
872 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE 872 .tmp_vmlinux1: $(vmlinux-lds) $(vmlinux-all) FORCE
873 $(call if_changed_rule,ksym_ld) 873 $(call if_changed_rule,ksym_ld)
874 874
875 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE 875 .tmp_vmlinux2: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms1.o FORCE
876 $(call if_changed,vmlinux__) 876 $(call if_changed,vmlinux__)
877 877
878 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE 878 .tmp_vmlinux3: $(vmlinux-lds) $(vmlinux-all) .tmp_kallsyms2.o FORCE
879 $(call if_changed,vmlinux__) 879 $(call if_changed,vmlinux__)
880 880
881 # Needs to visit scripts/ before $(KALLSYMS) can be used. 881 # Needs to visit scripts/ before $(KALLSYMS) can be used.
882 $(KALLSYMS): scripts ; 882 $(KALLSYMS): scripts ;
883 883
884 # Generate some data for debugging strange kallsyms problems 884 # Generate some data for debugging strange kallsyms problems
885 debug_kallsyms: .tmp_map$(last_kallsyms) 885 debug_kallsyms: .tmp_map$(last_kallsyms)
886 886
887 .tmp_map%: .tmp_vmlinux% FORCE 887 .tmp_map%: .tmp_vmlinux% FORCE
888 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@ 888 ($(OBJDUMP) -h $< | $(AWK) '/^ +[0-9]/{print $$4 " 0 " $$2}'; $(NM) $<) | sort > $@
889 889
890 .tmp_map3: .tmp_map2 890 .tmp_map3: .tmp_map2
891 891
892 .tmp_map2: .tmp_map1 892 .tmp_map2: .tmp_map1
893 893
894 endif # ifdef CONFIG_KALLSYMS 894 endif # ifdef CONFIG_KALLSYMS
895 895
896 # Do modpost on a prelinked vmlinux. The finally linked vmlinux has 896 # Do modpost on a prelinked vmlinux. The finally linked vmlinux has
897 # relevant sections renamed as per the linker script. 897 # relevant sections renamed as per the linker script.
898 quiet_cmd_vmlinux-modpost = LD $@ 898 quiet_cmd_vmlinux-modpost = LD $@
899 cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \ 899 cmd_vmlinux-modpost = $(LD) $(LDFLAGS) -r -o $@ \
900 $(vmlinux-init) --start-group $(vmlinux-main) --end-group \ 900 $(vmlinux-init) --start-group $(vmlinux-main) --end-group \
901 $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^) 901 $(filter-out $(vmlinux-init) $(vmlinux-main) FORCE ,$^)
902 define rule_vmlinux-modpost 902 define rule_vmlinux-modpost
903 : 903 :
904 +$(call cmd,vmlinux-modpost) 904 +$(call cmd,vmlinux-modpost)
905 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@ 905 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost $@
906 $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd 906 $(Q)echo 'cmd_$@ := $(cmd_vmlinux-modpost)' > $(dot-target).cmd
907 endef 907 endef
908 908
909 # vmlinux image - including updated kernel symbols 909 # vmlinux image - including updated kernel symbols
910 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE 910 vmlinux: $(vmlinux-lds) $(vmlinux-init) $(vmlinux-main) vmlinux.o $(kallsyms.o) FORCE
911 ifdef CONFIG_HEADERS_CHECK 911 ifdef CONFIG_HEADERS_CHECK
912 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check 912 $(Q)$(MAKE) -f $(srctree)/Makefile headers_check
913 endif 913 endif
914 ifdef CONFIG_SAMPLES 914 ifdef CONFIG_SAMPLES
915 $(Q)$(MAKE) $(build)=samples 915 $(Q)$(MAKE) $(build)=samples
916 endif 916 endif
917 ifdef CONFIG_BUILD_DOCSRC 917 ifdef CONFIG_BUILD_DOCSRC
918 $(Q)$(MAKE) $(build)=Documentation 918 $(Q)$(MAKE) $(build)=Documentation
919 endif 919 endif
920 $(call vmlinux-modpost) 920 $(call vmlinux-modpost)
921 $(call if_changed_rule,vmlinux__) 921 $(call if_changed_rule,vmlinux__)
922 $(Q)rm -f .old_version 922 $(Q)rm -f .old_version
923 923
924 # build vmlinux.o first to catch section mismatch errors early 924 # build vmlinux.o first to catch section mismatch errors early
925 ifdef CONFIG_KALLSYMS 925 ifdef CONFIG_KALLSYMS
926 .tmp_vmlinux1: vmlinux.o 926 .tmp_vmlinux1: vmlinux.o
927 endif 927 endif
928 928
929 modpost-init := $(filter-out init/built-in.o, $(vmlinux-init)) 929 modpost-init := $(filter-out init/built-in.o, $(vmlinux-init))
930 vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE 930 vmlinux.o: $(modpost-init) $(vmlinux-main) FORCE
931 $(call if_changed_rule,vmlinux-modpost) 931 $(call if_changed_rule,vmlinux-modpost)
932 932
933 # The actual objects are generated when descending, 933 # The actual objects are generated when descending,
934 # make sure no implicit rule kicks in 934 # make sure no implicit rule kicks in
935 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ; 935 $(sort $(vmlinux-init) $(vmlinux-main)) $(vmlinux-lds): $(vmlinux-dirs) ;
936 936
937 # Handle descending into subdirectories listed in $(vmlinux-dirs) 937 # Handle descending into subdirectories listed in $(vmlinux-dirs)
938 # Preset locale variables to speed up the build process. Limit locale 938 # Preset locale variables to speed up the build process. Limit locale
939 # tweaks to this spot to avoid wrong language settings when running 939 # tweaks to this spot to avoid wrong language settings when running
940 # make menuconfig etc. 940 # make menuconfig etc.
941 # Error messages still appears in the original language 941 # Error messages still appears in the original language
942 942
943 PHONY += $(vmlinux-dirs) 943 PHONY += $(vmlinux-dirs)
944 $(vmlinux-dirs): prepare scripts 944 $(vmlinux-dirs): prepare scripts
945 $(Q)$(MAKE) $(build)=$@ 945 $(Q)$(MAKE) $(build)=$@
946 946
947 # Store (new) KERNELRELASE string in include/config/kernel.release 947 # Store (new) KERNELRELASE string in include/config/kernel.release
948 include/config/kernel.release: include/config/auto.conf FORCE 948 include/config/kernel.release: include/config/auto.conf FORCE
949 $(Q)rm -f $@ 949 $(Q)rm -f $@
950 $(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@ 950 $(Q)echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" > $@
951 951
952 952
953 # Things we need to do before we recursively start building the kernel 953 # Things we need to do before we recursively start building the kernel
954 # or the modules are listed in "prepare". 954 # or the modules are listed in "prepare".
955 # A multi level approach is used. prepareN is processed before prepareN-1. 955 # A multi level approach is used. prepareN is processed before prepareN-1.
956 # archprepare is used in arch Makefiles and when processed asm symlink, 956 # archprepare is used in arch Makefiles and when processed asm symlink,
957 # version.h and scripts_basic is processed / created. 957 # version.h and scripts_basic is processed / created.
958 958
959 # Listed in dependency order 959 # Listed in dependency order
960 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 960 PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3
961 961
962 # prepare3 is used to check if we are building in a separate output directory, 962 # prepare3 is used to check if we are building in a separate output directory,
963 # and if so do: 963 # and if so do:
964 # 1) Check that make has not been executed in the kernel src $(srctree) 964 # 1) Check that make has not been executed in the kernel src $(srctree)
965 prepare3: include/config/kernel.release 965 prepare3: include/config/kernel.release
966 ifneq ($(KBUILD_SRC),) 966 ifneq ($(KBUILD_SRC),)
967 @$(kecho) ' Using $(srctree) as source for kernel' 967 @$(kecho) ' Using $(srctree) as source for kernel'
968 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ 968 $(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \
969 echo " $(srctree) is not clean, please run 'make mrproper'";\ 969 echo " $(srctree) is not clean, please run 'make mrproper'";\
970 echo " in the '$(srctree)' directory.";\ 970 echo " in the '$(srctree)' directory.";\
971 /bin/false; \ 971 /bin/false; \
972 fi; 972 fi;
973 endif 973 endif
974 974
975 # prepare2 creates a makefile if using a separate output directory 975 # prepare2 creates a makefile if using a separate output directory
976 prepare2: prepare3 outputmakefile asm-generic 976 prepare2: prepare3 outputmakefile asm-generic
977 977
978 prepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \ 978 prepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \
979 include/config/auto.conf 979 include/config/auto.conf
980 $(cmd_crmodverdir) 980 $(cmd_crmodverdir)
981 981
982 archprepare: archheaders prepare1 scripts_basic 982 archprepare: archheaders prepare1 scripts_basic
983 983
984 prepare0: archprepare FORCE 984 prepare0: archprepare FORCE
985 $(Q)$(MAKE) $(build)=. 985 $(Q)$(MAKE) $(build)=.
986 986
987 # All the preparing.. 987 # All the preparing..
988 prepare: prepare0 988 prepare: prepare0
989 989
990 # Generate some files 990 # Generate some files
991 # --------------------------------------------------------------------------- 991 # ---------------------------------------------------------------------------
992 992
993 # KERNELRELEASE can change from a few different places, meaning version.h 993 # KERNELRELEASE can change from a few different places, meaning version.h
994 # needs to be updated, so this check is forced on all builds 994 # needs to be updated, so this check is forced on all builds
995 995
996 uts_len := 64 996 uts_len := 64
997 define filechk_utsrelease.h 997 define filechk_utsrelease.h
998 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ 998 if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \
999 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ 999 echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \
1000 exit 1; \ 1000 exit 1; \
1001 fi; \ 1001 fi; \
1002 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) 1002 (echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";)
1003 endef 1003 endef
1004 1004
1005 define filechk_version.h 1005 define filechk_version.h
1006 (echo \#define LINUX_VERSION_CODE $(shell \ 1006 (echo \#define LINUX_VERSION_CODE $(shell \
1007 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ 1007 expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \
1008 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) 1008 echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';)
1009 endef 1009 endef
1010 1010
1011 include/linux/version.h: $(srctree)/Makefile FORCE 1011 include/linux/version.h: $(srctree)/Makefile FORCE
1012 $(call filechk,version.h) 1012 $(call filechk,version.h)
1013 1013
1014 include/generated/utsrelease.h: include/config/kernel.release FORCE 1014 include/generated/utsrelease.h: include/config/kernel.release FORCE
1015 $(call filechk,utsrelease.h) 1015 $(call filechk,utsrelease.h)
1016 1016
1017 PHONY += headerdep 1017 PHONY += headerdep
1018 headerdep: 1018 headerdep:
1019 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ 1019 $(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \
1020 $(srctree)/scripts/headerdep.pl -I$(srctree)/include 1020 $(srctree)/scripts/headerdep.pl -I$(srctree)/include
1021 1021
1022 # --------------------------------------------------------------------------- 1022 # ---------------------------------------------------------------------------
1023 1023
1024 PHONY += depend dep 1024 PHONY += depend dep
1025 depend dep: 1025 depend dep:
1026 @echo '*** Warning: make $@ is unnecessary now.' 1026 @echo '*** Warning: make $@ is unnecessary now.'
1027 1027
1028 # --------------------------------------------------------------------------- 1028 # ---------------------------------------------------------------------------
1029 # Firmware install 1029 # Firmware install
1030 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware 1030 INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware
1031 export INSTALL_FW_PATH 1031 export INSTALL_FW_PATH
1032 1032
1033 PHONY += firmware_install 1033 PHONY += firmware_install
1034 firmware_install: FORCE 1034 firmware_install: FORCE
1035 @mkdir -p $(objtree)/firmware 1035 @mkdir -p $(objtree)/firmware
1036 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install 1036 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install
1037 1037
1038 # --------------------------------------------------------------------------- 1038 # ---------------------------------------------------------------------------
1039 # Kernel headers 1039 # Kernel headers
1040 1040
1041 #Default location for installed headers 1041 #Default location for installed headers
1042 export INSTALL_HDR_PATH = $(objtree)/usr 1042 export INSTALL_HDR_PATH = $(objtree)/usr
1043 1043
1044 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj 1044 hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj
1045 1045
1046 # If we do an all arch process set dst to asm-$(hdr-arch) 1046 # If we do an all arch process set dst to asm-$(hdr-arch)
1047 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) 1047 hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
1048 1048
1049 PHONY += archheaders 1049 PHONY += archheaders
1050 archheaders: 1050 archheaders:
1051 1051
1052 PHONY += __headers 1052 PHONY += __headers
1053 __headers: include/linux/version.h scripts_basic asm-generic archheaders FORCE 1053 __headers: include/linux/version.h scripts_basic asm-generic archheaders FORCE
1054 $(Q)$(MAKE) $(build)=scripts build_unifdef 1054 $(Q)$(MAKE) $(build)=scripts build_unifdef
1055 1055
1056 PHONY += headers_install_all 1056 PHONY += headers_install_all
1057 headers_install_all: 1057 headers_install_all:
1058 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install 1058 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install
1059 1059
1060 PHONY += headers_install 1060 PHONY += headers_install
1061 headers_install: __headers 1061 headers_install: __headers
1062 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild),, \ 1062 $(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/asm/Kbuild),, \
1063 $(error Headers not exportable for the $(SRCARCH) architecture)) 1063 $(error Headers not exportable for the $(SRCARCH) architecture))
1064 $(Q)$(MAKE) $(hdr-inst)=include 1064 $(Q)$(MAKE) $(hdr-inst)=include
1065 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) 1065 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst)
1066 1066
1067 PHONY += headers_check_all 1067 PHONY += headers_check_all
1068 headers_check_all: headers_install_all 1068 headers_check_all: headers_install_all
1069 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check 1069 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check
1070 1070
1071 PHONY += headers_check 1071 PHONY += headers_check
1072 headers_check: headers_install 1072 headers_check: headers_install
1073 $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1 1073 $(Q)$(MAKE) $(hdr-inst)=include HDRCHECK=1
1074 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) HDRCHECK=1 1074 $(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/asm $(hdr-dst) HDRCHECK=1
1075 1075
1076 # --------------------------------------------------------------------------- 1076 # ---------------------------------------------------------------------------
1077 # Modules 1077 # Modules
1078 1078
1079 ifdef CONFIG_MODULES 1079 ifdef CONFIG_MODULES
1080 1080
1081 # By default, build modules as well 1081 # By default, build modules as well
1082 1082
1083 all: modules 1083 all: modules
1084 1084
1085 # Build modules 1085 # Build modules
1086 # 1086 #
1087 # A module can be listed more than once in obj-m resulting in 1087 # A module can be listed more than once in obj-m resulting in
1088 # duplicate lines in modules.order files. Those are removed 1088 # duplicate lines in modules.order files. Those are removed
1089 # using awk while concatenating to the final file. 1089 # using awk while concatenating to the final file.
1090 1090
1091 PHONY += modules 1091 PHONY += modules
1092 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin 1092 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
1093 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order 1093 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
1094 @$(kecho) ' Building modules, stage 2.'; 1094 @$(kecho) ' Building modules, stage 2.';
1095 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1095 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1096 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild 1096 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild
1097 1097
1098 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) 1098 modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
1099 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin 1099 $(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin
1100 1100
1101 %/modules.builtin: include/config/auto.conf 1101 %/modules.builtin: include/config/auto.conf
1102 $(Q)$(MAKE) $(modbuiltin)=$* 1102 $(Q)$(MAKE) $(modbuiltin)=$*
1103 1103
1104 1104
1105 # Target to prepare building external modules 1105 # Target to prepare building external modules
1106 PHONY += modules_prepare 1106 PHONY += modules_prepare
1107 modules_prepare: prepare scripts 1107 modules_prepare: prepare scripts
1108 1108
1109 # Target to install modules 1109 # Target to install modules
1110 PHONY += modules_install 1110 PHONY += modules_install
1111 modules_install: _modinst_ _modinst_post 1111 modules_install: _modinst_ _modinst_post
1112 1112
1113 PHONY += _modinst_ 1113 PHONY += _modinst_
1114 _modinst_: 1114 _modinst_:
1115 @rm -rf $(MODLIB)/kernel 1115 @rm -rf $(MODLIB)/kernel
1116 @rm -f $(MODLIB)/source 1116 @rm -f $(MODLIB)/source
1117 @mkdir -p $(MODLIB)/kernel 1117 @mkdir -p $(MODLIB)/kernel
1118 @ln -s $(srctree) $(MODLIB)/source 1118 @ln -s $(srctree) $(MODLIB)/source
1119 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ 1119 @if [ ! $(objtree) -ef $(MODLIB)/build ]; then \
1120 rm -f $(MODLIB)/build ; \ 1120 rm -f $(MODLIB)/build ; \
1121 ln -s $(objtree) $(MODLIB)/build ; \ 1121 ln -s $(objtree) $(MODLIB)/build ; \
1122 fi 1122 fi
1123 @cp -f $(objtree)/modules.order $(MODLIB)/ 1123 @cp -f $(objtree)/modules.order $(MODLIB)/
1124 @cp -f $(objtree)/modules.builtin $(MODLIB)/ 1124 @cp -f $(objtree)/modules.builtin $(MODLIB)/
1125 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1125 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1126 1126
1127 # This depmod is only for convenience to give the initial 1127 # This depmod is only for convenience to give the initial
1128 # boot a modules.dep even before / is mounted read-write. However the 1128 # boot a modules.dep even before / is mounted read-write. However the
1129 # boot script depmod is the master version. 1129 # boot script depmod is the master version.
1130 PHONY += _modinst_post 1130 PHONY += _modinst_post
1131 _modinst_post: _modinst_ 1131 _modinst_post: _modinst_
1132 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst 1132 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst
1133 $(call cmd,depmod) 1133 $(call cmd,depmod)
1134 1134
1135 else # CONFIG_MODULES 1135 else # CONFIG_MODULES
1136 1136
1137 # Modules not configured 1137 # Modules not configured
1138 # --------------------------------------------------------------------------- 1138 # ---------------------------------------------------------------------------
1139 1139
1140 modules modules_install: FORCE 1140 modules modules_install: FORCE
1141 @echo 1141 @echo
1142 @echo "The present kernel configuration has modules disabled." 1142 @echo "The present kernel configuration has modules disabled."
1143 @echo "Type 'make config' and enable loadable module support." 1143 @echo "Type 'make config' and enable loadable module support."
1144 @echo "Then build a kernel with module support enabled." 1144 @echo "Then build a kernel with module support enabled."
1145 @echo 1145 @echo
1146 @exit 1 1146 @exit 1
1147 1147
1148 endif # CONFIG_MODULES 1148 endif # CONFIG_MODULES
1149 1149
1150 ### 1150 ###
1151 # Cleaning is done on three levels. 1151 # Cleaning is done on three levels.
1152 # make clean Delete most generated files 1152 # make clean Delete most generated files
1153 # Leave enough to build external modules 1153 # Leave enough to build external modules
1154 # make mrproper Delete the current configuration, and all generated files 1154 # make mrproper Delete the current configuration, and all generated files
1155 # make distclean Remove editor backup files, patch leftover files and the like 1155 # make distclean Remove editor backup files, patch leftover files and the like
1156 1156
1157 # Directories & files removed with 'make clean' 1157 # Directories & files removed with 'make clean'
1158 CLEAN_DIRS += $(MODVERDIR) 1158 CLEAN_DIRS += $(MODVERDIR)
1159 CLEAN_FILES += vmlinux System.map \ 1159 CLEAN_FILES += vmlinux System.map \
1160 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map 1160 .tmp_kallsyms* .tmp_version .tmp_vmlinux* .tmp_System.map
1161 1161
1162 # Directories & files removed with 'make mrproper' 1162 # Directories & files removed with 'make mrproper'
1163 MRPROPER_DIRS += include/config usr/include include/generated \ 1163 MRPROPER_DIRS += include/config usr/include include/generated \
1164 arch/*/include/generated 1164 arch/*/include/generated
1165 MRPROPER_FILES += .config .config.old .version .old_version \ 1165 MRPROPER_FILES += .config .config.old .version .old_version \
1166 include/linux/version.h \ 1166 include/linux/version.h \
1167 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS 1167 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS
1168 1168
1169 # clean - Delete most, but leave enough to build external modules 1169 # clean - Delete most, but leave enough to build external modules
1170 # 1170 #
1171 clean: rm-dirs := $(CLEAN_DIRS) 1171 clean: rm-dirs := $(CLEAN_DIRS)
1172 clean: rm-files := $(CLEAN_FILES) 1172 clean: rm-files := $(CLEAN_FILES)
1173 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation) 1173 clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation)
1174 1174
1175 PHONY += $(clean-dirs) clean archclean 1175 PHONY += $(clean-dirs) clean archclean
1176 $(clean-dirs): 1176 $(clean-dirs):
1177 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1177 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1178 1178
1179 clean: archclean 1179 clean: archclean
1180 1180
1181 # mrproper - Delete all generated files, including .config 1181 # mrproper - Delete all generated files, including .config
1182 # 1182 #
1183 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) 1183 mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS))
1184 mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) 1184 mrproper: rm-files := $(wildcard $(MRPROPER_FILES))
1185 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) 1185 mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts)
1186 1186
1187 PHONY += $(mrproper-dirs) mrproper archmrproper 1187 PHONY += $(mrproper-dirs) mrproper archmrproper
1188 $(mrproper-dirs): 1188 $(mrproper-dirs):
1189 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) 1189 $(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@)
1190 1190
1191 mrproper: clean archmrproper $(mrproper-dirs) 1191 mrproper: clean archmrproper $(mrproper-dirs)
1192 $(call cmd,rmdirs) 1192 $(call cmd,rmdirs)
1193 $(call cmd,rmfiles) 1193 $(call cmd,rmfiles)
1194 1194
1195 # distclean 1195 # distclean
1196 # 1196 #
1197 PHONY += distclean 1197 PHONY += distclean
1198 1198
1199 distclean: mrproper 1199 distclean: mrproper
1200 @find $(srctree) $(RCS_FIND_IGNORE) \ 1200 @find $(srctree) $(RCS_FIND_IGNORE) \
1201 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \ 1201 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
1202 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ 1202 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
1203 -o -name '.*.rej' \ 1203 -o -name '.*.rej' \
1204 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ 1204 -o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \
1205 -type f -print | xargs rm -f 1205 -type f -print | xargs rm -f
1206 1206
1207 1207
1208 # Packaging of the kernel to various formats 1208 # Packaging of the kernel to various formats
1209 # --------------------------------------------------------------------------- 1209 # ---------------------------------------------------------------------------
1210 # rpm target kept for backward compatibility 1210 # rpm target kept for backward compatibility
1211 package-dir := $(srctree)/scripts/package 1211 package-dir := $(srctree)/scripts/package
1212 1212
1213 %src-pkg: FORCE 1213 %src-pkg: FORCE
1214 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1214 $(Q)$(MAKE) $(build)=$(package-dir) $@
1215 %pkg: include/config/kernel.release FORCE 1215 %pkg: include/config/kernel.release FORCE
1216 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1216 $(Q)$(MAKE) $(build)=$(package-dir) $@
1217 rpm: include/config/kernel.release FORCE 1217 rpm: include/config/kernel.release FORCE
1218 $(Q)$(MAKE) $(build)=$(package-dir) $@ 1218 $(Q)$(MAKE) $(build)=$(package-dir) $@
1219 1219
1220 1220
1221 # Brief documentation of the typical targets used 1221 # Brief documentation of the typical targets used
1222 # --------------------------------------------------------------------------- 1222 # ---------------------------------------------------------------------------
1223 1223
1224 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) 1224 boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig)
1225 boards := $(notdir $(boards)) 1225 boards := $(notdir $(boards))
1226 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) 1226 board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig))
1227 board-dirs := $(sort $(notdir $(board-dirs:/=))) 1227 board-dirs := $(sort $(notdir $(board-dirs:/=)))
1228 1228
1229 help: 1229 help:
1230 @echo 'Cleaning targets:' 1230 @echo 'Cleaning targets:'
1231 @echo ' clean - Remove most generated files but keep the config and' 1231 @echo ' clean - Remove most generated files but keep the config and'
1232 @echo ' enough build support to build external modules' 1232 @echo ' enough build support to build external modules'
1233 @echo ' mrproper - Remove all generated files + config + various backup files' 1233 @echo ' mrproper - Remove all generated files + config + various backup files'
1234 @echo ' distclean - mrproper + remove editor backup and patch files' 1234 @echo ' distclean - mrproper + remove editor backup and patch files'
1235 @echo '' 1235 @echo ''
1236 @echo 'Configuration targets:' 1236 @echo 'Configuration targets:'
1237 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help 1237 @$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help
1238 @echo '' 1238 @echo ''
1239 @echo 'Other generic targets:' 1239 @echo 'Other generic targets:'
1240 @echo ' all - Build all targets marked with [*]' 1240 @echo ' all - Build all targets marked with [*]'
1241 @echo '* vmlinux - Build the bare kernel' 1241 @echo '* vmlinux - Build the bare kernel'
1242 @echo '* modules - Build all modules' 1242 @echo '* modules - Build all modules'
1243 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' 1243 @echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)'
1244 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' 1244 @echo ' firmware_install- Install all firmware to INSTALL_FW_PATH'
1245 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' 1245 @echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)'
1246 @echo ' dir/ - Build all files in dir and below' 1246 @echo ' dir/ - Build all files in dir and below'
1247 @echo ' dir/file.[oisS] - Build specified target only' 1247 @echo ' dir/file.[oisS] - Build specified target only'
1248 @echo ' dir/file.lst - Build specified mixed source/assembly target only' 1248 @echo ' dir/file.lst - Build specified mixed source/assembly target only'
1249 @echo ' (requires a recent binutils and recent build (System.map))' 1249 @echo ' (requires a recent binutils and recent build (System.map))'
1250 @echo ' dir/file.ko - Build module including final link' 1250 @echo ' dir/file.ko - Build module including final link'
1251 @echo ' modules_prepare - Set up for building external modules' 1251 @echo ' modules_prepare - Set up for building external modules'
1252 @echo ' tags/TAGS - Generate tags file for editors' 1252 @echo ' tags/TAGS - Generate tags file for editors'
1253 @echo ' cscope - Generate cscope index' 1253 @echo ' cscope - Generate cscope index'
1254 @echo ' gtags - Generate GNU GLOBAL index' 1254 @echo ' gtags - Generate GNU GLOBAL index'
1255 @echo ' kernelrelease - Output the release version string' 1255 @echo ' kernelrelease - Output the release version string'
1256 @echo ' kernelversion - Output the version stored in Makefile' 1256 @echo ' kernelversion - Output the version stored in Makefile'
1257 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ 1257 @echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \
1258 echo ' (default: $(INSTALL_HDR_PATH))'; \ 1258 echo ' (default: $(INSTALL_HDR_PATH))'; \
1259 echo '' 1259 echo ''
1260 @echo 'Static analysers' 1260 @echo 'Static analysers'
1261 @echo ' checkstack - Generate a list of stack hogs' 1261 @echo ' checkstack - Generate a list of stack hogs'
1262 @echo ' namespacecheck - Name space analysis on compiled kernel' 1262 @echo ' namespacecheck - Name space analysis on compiled kernel'
1263 @echo ' versioncheck - Sanity check on version.h usage' 1263 @echo ' versioncheck - Sanity check on version.h usage'
1264 @echo ' includecheck - Check for duplicate included header files' 1264 @echo ' includecheck - Check for duplicate included header files'
1265 @echo ' export_report - List the usages of all exported symbols' 1265 @echo ' export_report - List the usages of all exported symbols'
1266 @echo ' headers_check - Sanity check on exported headers' 1266 @echo ' headers_check - Sanity check on exported headers'
1267 @echo ' headerdep - Detect inclusion cycles in headers' 1267 @echo ' headerdep - Detect inclusion cycles in headers'
1268 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help 1268 @$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help
1269 @echo '' 1269 @echo ''
1270 @echo 'Kernel packaging:' 1270 @echo 'Kernel packaging:'
1271 @$(MAKE) $(build)=$(package-dir) help 1271 @$(MAKE) $(build)=$(package-dir) help
1272 @echo '' 1272 @echo ''
1273 @echo 'Documentation targets:' 1273 @echo 'Documentation targets:'
1274 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp 1274 @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
1275 @echo '' 1275 @echo ''
1276 @echo 'Architecture specific targets ($(SRCARCH)):' 1276 @echo 'Architecture specific targets ($(SRCARCH)):'
1277 @$(if $(archhelp),$(archhelp),\ 1277 @$(if $(archhelp),$(archhelp),\
1278 echo ' No architecture specific help defined for $(SRCARCH)') 1278 echo ' No architecture specific help defined for $(SRCARCH)')
1279 @echo '' 1279 @echo ''
1280 @$(if $(boards), \ 1280 @$(if $(boards), \
1281 $(foreach b, $(boards), \ 1281 $(foreach b, $(boards), \
1282 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ 1282 printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \
1283 echo '') 1283 echo '')
1284 @$(if $(board-dirs), \ 1284 @$(if $(board-dirs), \
1285 $(foreach b, $(board-dirs), \ 1285 $(foreach b, $(board-dirs), \
1286 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ 1286 printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \
1287 printf " %-16s - Show all of the above\\n" help-boards; \ 1287 printf " %-16s - Show all of the above\\n" help-boards; \
1288 echo '') 1288 echo '')
1289 1289
1290 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' 1290 @echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build'
1291 @echo ' make V=2 [targets] 2 => give reason for rebuild of target' 1291 @echo ' make V=2 [targets] 2 => give reason for rebuild of target'
1292 @echo ' make O=dir [targets] Locate all output files in "dir", including .config' 1292 @echo ' make O=dir [targets] Locate all output files in "dir", including .config'
1293 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' 1293 @echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)'
1294 @echo ' make C=2 [targets] Force check of all c source with $$CHECK' 1294 @echo ' make C=2 [targets] Force check of all c source with $$CHECK'
1295 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' 1295 @echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections'
1296 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' 1296 @echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where'
1297 @echo ' 1: warnings which may be relevant and do not occur too often' 1297 @echo ' 1: warnings which may be relevant and do not occur too often'
1298 @echo ' 2: warnings which occur quite often but may still be relevant' 1298 @echo ' 2: warnings which occur quite often but may still be relevant'
1299 @echo ' 3: more obscure warnings, can most likely be ignored' 1299 @echo ' 3: more obscure warnings, can most likely be ignored'
1300 @echo ' Multiple levels can be combined with W=12 or W=123' 1300 @echo ' Multiple levels can be combined with W=12 or W=123'
1301 @echo '' 1301 @echo ''
1302 @echo 'Execute "make" or "make all" to build all targets marked with [*] ' 1302 @echo 'Execute "make" or "make all" to build all targets marked with [*] '
1303 @echo 'For further info see the ./README file' 1303 @echo 'For further info see the ./README file'
1304 1304
1305 1305
1306 help-board-dirs := $(addprefix help-,$(board-dirs)) 1306 help-board-dirs := $(addprefix help-,$(board-dirs))
1307 1307
1308 help-boards: $(help-board-dirs) 1308 help-boards: $(help-board-dirs)
1309 1309
1310 boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) 1310 boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig))
1311 1311
1312 $(help-board-dirs): help-%: 1312 $(help-board-dirs): help-%:
1313 @echo 'Architecture specific targets ($(SRCARCH) $*):' 1313 @echo 'Architecture specific targets ($(SRCARCH) $*):'
1314 @$(if $(boards-per-dir), \ 1314 @$(if $(boards-per-dir), \
1315 $(foreach b, $(boards-per-dir), \ 1315 $(foreach b, $(boards-per-dir), \
1316 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ 1316 printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \
1317 echo '') 1317 echo '')
1318 1318
1319 1319
1320 # Documentation targets 1320 # Documentation targets
1321 # --------------------------------------------------------------------------- 1321 # ---------------------------------------------------------------------------
1322 %docs: scripts_basic FORCE 1322 %docs: scripts_basic FORCE
1323 $(Q)$(MAKE) $(build)=scripts build_docproc 1323 $(Q)$(MAKE) $(build)=scripts build_docproc
1324 $(Q)$(MAKE) $(build)=Documentation/DocBook $@ 1324 $(Q)$(MAKE) $(build)=Documentation/DocBook $@
1325 1325
1326 else # KBUILD_EXTMOD 1326 else # KBUILD_EXTMOD
1327 1327
1328 ### 1328 ###
1329 # External module support. 1329 # External module support.
1330 # When building external modules the kernel used as basis is considered 1330 # When building external modules the kernel used as basis is considered
1331 # read-only, and no consistency checks are made and the make 1331 # read-only, and no consistency checks are made and the make
1332 # system is not used on the basis kernel. If updates are required 1332 # system is not used on the basis kernel. If updates are required
1333 # in the basis kernel ordinary make commands (without M=...) must 1333 # in the basis kernel ordinary make commands (without M=...) must
1334 # be used. 1334 # be used.
1335 # 1335 #
1336 # The following are the only valid targets when building external 1336 # The following are the only valid targets when building external
1337 # modules. 1337 # modules.
1338 # make M=dir clean Delete all automatically generated files 1338 # make M=dir clean Delete all automatically generated files
1339 # make M=dir modules Make all modules in specified dir 1339 # make M=dir modules Make all modules in specified dir
1340 # make M=dir Same as 'make M=dir modules' 1340 # make M=dir Same as 'make M=dir modules'
1341 # make M=dir modules_install 1341 # make M=dir modules_install
1342 # Install the modules built in the module directory 1342 # Install the modules built in the module directory
1343 # Assumes install directory is already created 1343 # Assumes install directory is already created
1344 1344
1345 # We are always building modules 1345 # We are always building modules
1346 KBUILD_MODULES := 1 1346 KBUILD_MODULES := 1
1347 PHONY += crmodverdir 1347 PHONY += crmodverdir
1348 crmodverdir: 1348 crmodverdir:
1349 $(cmd_crmodverdir) 1349 $(cmd_crmodverdir)
1350 1350
1351 PHONY += $(objtree)/Module.symvers 1351 PHONY += $(objtree)/Module.symvers
1352 $(objtree)/Module.symvers: 1352 $(objtree)/Module.symvers:
1353 @test -e $(objtree)/Module.symvers || ( \ 1353 @test -e $(objtree)/Module.symvers || ( \
1354 echo; \ 1354 echo; \
1355 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ 1355 echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \
1356 echo " is missing; modules will have no dependencies and modversions."; \ 1356 echo " is missing; modules will have no dependencies and modversions."; \
1357 echo ) 1357 echo )
1358 1358
1359 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) 1359 module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD))
1360 PHONY += $(module-dirs) modules 1360 PHONY += $(module-dirs) modules
1361 $(module-dirs): crmodverdir $(objtree)/Module.symvers 1361 $(module-dirs): crmodverdir $(objtree)/Module.symvers
1362 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) 1362 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
1363 1363
1364 modules: $(module-dirs) 1364 modules: $(module-dirs)
1365 @$(kecho) ' Building modules, stage 2.'; 1365 @$(kecho) ' Building modules, stage 2.';
1366 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1366 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1367 1367
1368 PHONY += modules_install 1368 PHONY += modules_install
1369 modules_install: _emodinst_ _emodinst_post 1369 modules_install: _emodinst_ _emodinst_post
1370 1370
1371 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) 1371 install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra)
1372 PHONY += _emodinst_ 1372 PHONY += _emodinst_
1373 _emodinst_: 1373 _emodinst_:
1374 $(Q)mkdir -p $(MODLIB)/$(install-dir) 1374 $(Q)mkdir -p $(MODLIB)/$(install-dir)
1375 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst 1375 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst
1376 1376
1377 PHONY += _emodinst_post 1377 PHONY += _emodinst_post
1378 _emodinst_post: _emodinst_ 1378 _emodinst_post: _emodinst_
1379 $(call cmd,depmod) 1379 $(call cmd,depmod)
1380 1380
1381 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) 1381 clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD))
1382 1382
1383 PHONY += $(clean-dirs) clean 1383 PHONY += $(clean-dirs) clean
1384 $(clean-dirs): 1384 $(clean-dirs):
1385 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) 1385 $(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@)
1386 1386
1387 clean: rm-dirs := $(MODVERDIR) 1387 clean: rm-dirs := $(MODVERDIR)
1388 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers 1388 clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers
1389 1389
1390 help: 1390 help:
1391 @echo ' Building external modules.' 1391 @echo ' Building external modules.'
1392 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' 1392 @echo ' Syntax: make -C path/to/kernel/src M=$$PWD target'
1393 @echo '' 1393 @echo ''
1394 @echo ' modules - default target, build the module(s)' 1394 @echo ' modules - default target, build the module(s)'
1395 @echo ' modules_install - install the module' 1395 @echo ' modules_install - install the module'
1396 @echo ' clean - remove generated files in module directory only' 1396 @echo ' clean - remove generated files in module directory only'
1397 @echo '' 1397 @echo ''
1398 1398
1399 # Dummies... 1399 # Dummies...
1400 PHONY += prepare scripts 1400 PHONY += prepare scripts
1401 prepare: ; 1401 prepare: ;
1402 scripts: ; 1402 scripts: ;
1403 endif # KBUILD_EXTMOD 1403 endif # KBUILD_EXTMOD
1404 1404
1405 clean: $(clean-dirs) 1405 clean: $(clean-dirs)
1406 $(call cmd,rmdirs) 1406 $(call cmd,rmdirs)
1407 $(call cmd,rmfiles) 1407 $(call cmd,rmfiles)
1408 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ 1408 @find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \
1409 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ 1409 \( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \
1410 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ 1410 -o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
1411 -o -name '*.symtypes' -o -name 'modules.order' \ 1411 -o -name '*.symtypes' -o -name 'modules.order' \
1412 -o -name modules.builtin -o -name '.tmp_*.o.*' \ 1412 -o -name modules.builtin -o -name '.tmp_*.o.*' \
1413 -o -name '*.gcno' \) -type f -print | xargs rm -f 1413 -o -name '*.gcno' \) -type f -print | xargs rm -f
1414 1414
1415 # Generate tags for editors 1415 # Generate tags for editors
1416 # --------------------------------------------------------------------------- 1416 # ---------------------------------------------------------------------------
1417 quiet_cmd_tags = GEN $@ 1417 quiet_cmd_tags = GEN $@
1418 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ 1418 cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@
1419 1419
1420 tags TAGS cscope gtags: FORCE 1420 tags TAGS cscope gtags: FORCE
1421 $(call cmd,tags) 1421 $(call cmd,tags)
1422 1422
1423 # Scripts to check various things for consistency 1423 # Scripts to check various things for consistency
1424 # --------------------------------------------------------------------------- 1424 # ---------------------------------------------------------------------------
1425 1425
1426 PHONY += includecheck versioncheck coccicheck namespacecheck export_report 1426 PHONY += includecheck versioncheck coccicheck namespacecheck export_report
1427 1427
1428 includecheck: 1428 includecheck:
1429 find $(srctree)/* $(RCS_FIND_IGNORE) \ 1429 find $(srctree)/* $(RCS_FIND_IGNORE) \
1430 -name '*.[hcS]' -type f -print | sort \ 1430 -name '*.[hcS]' -type f -print | sort \
1431 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl 1431 | xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl
1432 1432
1433 versioncheck: 1433 versioncheck:
1434 find $(srctree)/* $(RCS_FIND_IGNORE) \ 1434 find $(srctree)/* $(RCS_FIND_IGNORE) \
1435 -name '*.[hcS]' -type f -print | sort \ 1435 -name '*.[hcS]' -type f -print | sort \
1436 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl 1436 | xargs $(PERL) -w $(srctree)/scripts/checkversion.pl
1437 1437
1438 coccicheck: 1438 coccicheck:
1439 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ 1439 $(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@
1440 1440
1441 namespacecheck: 1441 namespacecheck:
1442 $(PERL) $(srctree)/scripts/namespace.pl 1442 $(PERL) $(srctree)/scripts/namespace.pl
1443 1443
1444 export_report: 1444 export_report:
1445 $(PERL) $(srctree)/scripts/export_report.pl 1445 $(PERL) $(srctree)/scripts/export_report.pl
1446 1446
1447 endif #ifeq ($(config-targets),1) 1447 endif #ifeq ($(config-targets),1)
1448 endif #ifeq ($(mixed-targets),1) 1448 endif #ifeq ($(mixed-targets),1)
1449 1449
1450 PHONY += checkstack kernelrelease kernelversion 1450 PHONY += checkstack kernelrelease kernelversion
1451 1451
1452 # UML needs a little special treatment here. It wants to use the host 1452 # UML needs a little special treatment here. It wants to use the host
1453 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone 1453 # toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone
1454 # else wants $(ARCH), including people doing cross-builds, which means 1454 # else wants $(ARCH), including people doing cross-builds, which means
1455 # that $(SUBARCH) doesn't work here. 1455 # that $(SUBARCH) doesn't work here.
1456 ifeq ($(ARCH), um) 1456 ifeq ($(ARCH), um)
1457 CHECKSTACK_ARCH := $(SUBARCH) 1457 CHECKSTACK_ARCH := $(SUBARCH)
1458 else 1458 else
1459 CHECKSTACK_ARCH := $(ARCH) 1459 CHECKSTACK_ARCH := $(ARCH)
1460 endif 1460 endif
1461 checkstack: 1461 checkstack:
1462 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ 1462 $(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \
1463 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) 1463 $(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH)
1464 1464
1465 kernelrelease: 1465 kernelrelease:
1466 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" 1466 @echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))"
1467 1467
1468 kernelversion: 1468 kernelversion:
1469 @echo $(KERNELVERSION) 1469 @echo $(KERNELVERSION)
1470 1470
1471 # Single targets 1471 # Single targets
1472 # --------------------------------------------------------------------------- 1472 # ---------------------------------------------------------------------------
1473 # Single targets are compatible with: 1473 # Single targets are compatible with:
1474 # - build with mixed source and output 1474 # - build with mixed source and output
1475 # - build with separate output dir 'make O=...' 1475 # - build with separate output dir 'make O=...'
1476 # - external modules 1476 # - external modules
1477 # 1477 #
1478 # target-dir => where to store outputfile 1478 # target-dir => where to store outputfile
1479 # build-dir => directory in kernel source tree to use 1479 # build-dir => directory in kernel source tree to use
1480 1480
1481 ifeq ($(KBUILD_EXTMOD),) 1481 ifeq ($(KBUILD_EXTMOD),)
1482 build-dir = $(patsubst %/,%,$(dir $@)) 1482 build-dir = $(patsubst %/,%,$(dir $@))
1483 target-dir = $(dir $@) 1483 target-dir = $(dir $@)
1484 else 1484 else
1485 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) 1485 zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@)))
1486 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) 1486 build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash))
1487 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) 1487 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
1488 endif 1488 endif
1489 1489
1490 %.s: %.c prepare scripts FORCE 1490 %.s: %.c prepare scripts FORCE
1491 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1491 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1492 %.i: %.c prepare scripts FORCE 1492 %.i: %.c prepare scripts FORCE
1493 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1493 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1494 %.o: %.c prepare scripts FORCE 1494 %.o: %.c prepare scripts FORCE
1495 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1495 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1496 %.lst: %.c prepare scripts FORCE 1496 %.lst: %.c prepare scripts FORCE
1497 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1497 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1498 %.s: %.S prepare scripts FORCE 1498 %.s: %.S prepare scripts FORCE
1499 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1499 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1500 %.o: %.S prepare scripts FORCE 1500 %.o: %.S prepare scripts FORCE
1501 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1501 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1502 %.symtypes: %.c prepare scripts FORCE 1502 %.symtypes: %.c prepare scripts FORCE
1503 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) 1503 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
1504 1504
1505 # Modules 1505 # Modules
1506 /: prepare scripts FORCE 1506 /: prepare scripts FORCE
1507 $(cmd_crmodverdir) 1507 $(cmd_crmodverdir)
1508 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1508 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1509 $(build)=$(build-dir) 1509 $(build)=$(build-dir)
1510 %/: prepare scripts FORCE 1510 %/: prepare scripts FORCE
1511 $(cmd_crmodverdir) 1511 $(cmd_crmodverdir)
1512 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1512 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1513 $(build)=$(build-dir) 1513 $(build)=$(build-dir)
1514 %.ko: prepare scripts FORCE 1514 %.ko: prepare scripts FORCE
1515 $(cmd_crmodverdir) 1515 $(cmd_crmodverdir)
1516 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ 1516 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
1517 $(build)=$(build-dir) $(@:.ko=.o) 1517 $(build)=$(build-dir) $(@:.ko=.o)
1518 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost 1518 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
1519 1519
1520 # FIXME Should go into a make.lib or something 1520 # FIXME Should go into a make.lib or something
1521 # =========================================================================== 1521 # ===========================================================================
1522 1522
1523 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) 1523 quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs)))
1524 cmd_rmdirs = rm -rf $(rm-dirs) 1524 cmd_rmdirs = rm -rf $(rm-dirs)
1525 1525
1526 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) 1526 quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files)))
1527 cmd_rmfiles = rm -f $(rm-files) 1527 cmd_rmfiles = rm -f $(rm-files)
1528 1528
1529 # Run depmod only if we have System.map and depmod is executable 1529 # Run depmod only if we have System.map and depmod is executable
1530 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) 1530 quiet_cmd_depmod = DEPMOD $(KERNELRELEASE)
1531 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ 1531 cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \
1532 $(KERNELRELEASE) 1532 $(KERNELRELEASE)
1533 1533
1534 # Create temporary dir for module support files 1534 # Create temporary dir for module support files
1535 # clean it up only when building all modules 1535 # clean it up only when building all modules
1536 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ 1536 cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \
1537 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) 1537 $(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*)
1538 1538
1539 a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \ 1539 a_flags = -Wp,-MD,$(depfile) $(KBUILD_AFLAGS) $(AFLAGS_KERNEL) \
1540 $(KBUILD_AFLAGS_KERNEL) \ 1540 $(KBUILD_AFLAGS_KERNEL) \
1541 $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \ 1541 $(NOSTDINC_FLAGS) $(LINUXINCLUDE) $(KBUILD_CPPFLAGS) \
1542 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o) 1542 $(modkern_aflags) $(EXTRA_AFLAGS) $(AFLAGS_$(basetarget).o)
1543 1543
1544 quiet_cmd_as_o_S = AS $@ 1544 quiet_cmd_as_o_S = AS $@
1545 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $< 1545 cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
1546 1546
1547 # read all saved command lines 1547 # read all saved command lines
1548 1548
1549 targets := $(wildcard $(sort $(targets))) 1549 targets := $(wildcard $(sort $(targets)))
1550 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) 1550 cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd))
1551 1551
1552 ifneq ($(cmd_files),) 1552 ifneq ($(cmd_files),)
1553 $(cmd_files): ; # Do not try to update included dependency files 1553 $(cmd_files): ; # Do not try to update included dependency files
1554 include $(cmd_files) 1554 include $(cmd_files)
1555 endif 1555 endif
1556 1556
1557 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir 1557 # Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir
1558 # Usage: 1558 # Usage:
1559 # $(Q)$(MAKE) $(clean)=dir 1559 # $(Q)$(MAKE) $(clean)=dir
1560 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj 1560 clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
1561 1561
1562 endif # skip-makefile 1562 endif # skip-makefile
1563 1563
1564 PHONY += FORCE 1564 PHONY += FORCE
1565 FORCE: 1565 FORCE:
1566 1566
1567 # Declare the contents of the .PHONY variable as phony. We keep that 1567 # Declare the contents of the .PHONY variable as phony. We keep that
1568 # information in a variable so we can use it in if_changed and friends. 1568 # information in a variable so we can use it in if_changed and friends.
1569 .PHONY: $(PHONY) 1569 .PHONY: $(PHONY)
1570 1570